Home / 21,624.28-29,832.92-13,123.30

Finding the Fourth Proportional to 21,624.28, 29,832.92 and 13,123.30

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Solution

The fourth proportional to 21,624.28, 29,832.92 and 13,123.30 is: 18,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.28 : 29,832.92 = 13,123.30 : x
  2. Step 2: Convert to fraction form
    21,624.28/29,832.92 = 13,123.30/x
  3. Step 3: Cross multiply
    21,624.28x = 29,832.92 × 13,123.30
  4. Step 4: Simplify right side
    21,624.28x = 391,506,359.04
  5. Step 5: Solve for x
    x = 391,506,359.04/21,624.28
  6. Step 6: Final answer
    x = 18,104.94

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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.