Home / 15,553.12-21,463.24-8,479.92

Finding the Fourth Proportional to 15,553.12, 21,463.24 and 8,479.92

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Solution

The fourth proportional to 15,553.12, 21,463.24 and 8,479.92 is: 11,702.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.12 : 21,463.24 = 8,479.92 : x
  2. Step 2: Convert to fraction form
    15,553.12/21,463.24 = 8,479.92/x
  3. Step 3: Cross multiply
    15,553.12x = 21,463.24 × 8,479.92
  4. Step 4: Simplify right side
    15,553.12x = 182,006,558.14
  5. Step 5: Solve for x
    x = 182,006,558.14/15,553.12
  6. Step 6: Final answer
    x = 11,702.25

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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.