Home / 28,807,897,275.13-39,755,368,904.13-15,771,862,460.49

Finding the Fourth Proportional to 28,807,897,275.13, 39,755,368,904.13 and 15,771,862,460.49

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Solution

The fourth proportional to 28,807,897,275.13, 39,755,368,904.13 and 15,771,862,460.49 is: 21,765,427,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807,897,275.13 : 39,755,368,904.13 = 15,771,862,460.49 : x
  2. Step 2: Convert to fraction form
    28,807,897,275.13/39,755,368,904.13 = 15,771,862,460.49/x
  3. Step 3: Cross multiply
    28,807,897,275.13x = 39,755,368,904.13 × 15,771,862,460.49
  4. Step 4: Simplify right side
    28,807,897,275.13x = 627,016,210,421,900,509,184
  5. Step 5: Solve for x
    x = 627,016,210,421,900,509,184/28,807,897,275.13
  6. Step 6: Final answer
    x = 21,765,427,876.72

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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.