Home / 27,654.27-38,162.90-15,717.30

Finding the Fourth Proportional to 27,654.27, 38,162.90 and 15,717.30

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Solution

The fourth proportional to 27,654.27, 38,162.90 and 15,717.30 is: 21,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,654.27 : 38,162.90 = 15,717.30 : x
  2. Step 2: Convert to fraction form
    27,654.27/38,162.90 = 15,717.30/x
  3. Step 3: Cross multiply
    27,654.27x = 38,162.90 × 15,717.30
  4. Step 4: Simplify right side
    27,654.27x = 599,817,748.17
  5. Step 5: Solve for x
    x = 599,817,748.17/27,654.27
  6. Step 6: Final answer
    x = 21,689.88

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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.