Home / 15,306.64-21,123.15-8,932.75

Finding the Fourth Proportional to 15,306.64, 21,123.15 and 8,932.75

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Solution

The fourth proportional to 15,306.64, 21,123.15 and 8,932.75 is: 12,327.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.64 : 21,123.15 = 8,932.75 : x
  2. Step 2: Convert to fraction form
    15,306.64/21,123.15 = 8,932.75/x
  3. Step 3: Cross multiply
    15,306.64x = 21,123.15 × 8,932.75
  4. Step 4: Simplify right side
    15,306.64x = 188,687,731.86
  5. Step 5: Solve for x
    x = 188,687,731.86/15,306.64
  6. Step 6: Final answer
    x = 12,327.18

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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.