Home / 27,731.17-38,269.01-15,155.92

Finding the Fourth Proportional to 27,731.17, 38,269.01 and 15,155.92

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Solution

The fourth proportional to 27,731.17, 38,269.01 and 15,155.92 is: 20,915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.17 : 38,269.01 = 15,155.92 : x
  2. Step 2: Convert to fraction form
    27,731.17/38,269.01 = 15,155.92/x
  3. Step 3: Cross multiply
    27,731.17x = 38,269.01 × 15,155.92
  4. Step 4: Simplify right side
    27,731.17x = 580,001,996.26
  5. Step 5: Solve for x
    x = 580,001,996.26/27,731.17
  6. Step 6: Final answer
    x = 20,915.17

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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.