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Finding the Fourth Proportional to 27,892.86, 38,491.06 and 15,957.30

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Solution

The fourth proportional to 27,892.86, 38,491.06 and 15,957.30 is: 22,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,892.86 : 38,491.06 = 15,957.30 : x
  2. Step 2: Convert to fraction form
    27,892.86/38,491.06 = 15,957.30/x
  3. Step 3: Cross multiply
    27,892.86x = 38,491.06 × 15,957.30
  4. Step 4: Simplify right side
    27,892.86x = 614,213,391.74
  5. Step 5: Solve for x
    x = 614,213,391.74/27,892.86
  6. Step 6: Final answer
    x = 22,020.45

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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.