Home / 21,096,073.80-31,560,129.90-18,287,382.60

Finding the Fourth Proportional to 21,096,073.80, 31,560,129.90 and 18,287,382.60

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Solution

The fourth proportional to 21,096,073.80, 31,560,129.90 and 18,287,382.60 is: 27,358,274.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096,073.80 : 31,560,129.90 = 18,287,382.60 : x
  2. Step 2: Convert to fraction form
    21,096,073.80/31,560,129.90 = 18,287,382.60/x
  3. Step 3: Cross multiply
    21,096,073.80x = 31,560,129.90 × 18,287,382.60
  4. Step 4: Simplify right side
    21,096,073.80x = 577,152,170,386,999.75
  5. Step 5: Solve for x
    x = 577,152,170,386,999.75/21,096,073.80
  6. Step 6: Final answer
    x = 27,358,274.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.