Home / 28,807,897,274.88-39,755,368,903.78-15,771,862,460.24

Finding the Fourth Proportional to 28,807,897,274.88, 39,755,368,903.78 and 15,771,862,460.24

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Solution

The fourth proportional to 28,807,897,274.88, 39,755,368,903.78 and 15,771,862,460.24 is: 21,765,427,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807,897,274.88 : 39,755,368,903.78 = 15,771,862,460.24 : x
  2. Step 2: Convert to fraction form
    28,807,897,274.88/39,755,368,903.78 = 15,771,862,460.24/x
  3. Step 3: Cross multiply
    28,807,897,274.88x = 39,755,368,903.78 × 15,771,862,460.24
  4. Step 4: Simplify right side
    28,807,897,274.88x = 627,016,210,406,520,389,632
  5. Step 5: Solve for x
    x = 627,016,210,406,520,389,632/28,807,897,274.88
  6. Step 6: Final answer
    x = 21,765,427,876.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.