Home / 21,654.18-29,882.88-11,718.18

Finding the Fourth Proportional to 21,654.18, 29,882.88 and 11,718.18

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Solution

The fourth proportional to 21,654.18, 29,882.88 and 11,718.18 is: 16,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.18 : 29,882.88 = 11,718.18 : x
  2. Step 2: Convert to fraction form
    21,654.18/29,882.88 = 11,718.18/x
  3. Step 3: Cross multiply
    21,654.18x = 29,882.88 × 11,718.18
  4. Step 4: Simplify right side
    21,654.18x = 350,172,966.76
  5. Step 5: Solve for x
    x = 350,172,966.76/21,654.18
  6. Step 6: Final answer
    x = 16,171.15

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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.