Home / 15,553.28-21,463.50-8,479.70

Finding the Fourth Proportional to 15,553.28, 21,463.50 and 8,479.70

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Solution

The fourth proportional to 15,553.28, 21,463.50 and 8,479.70 is: 11,701.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.28 : 21,463.50 = 8,479.70 : x
  2. Step 2: Convert to fraction form
    15,553.28/21,463.50 = 8,479.70/x
  3. Step 3: Cross multiply
    15,553.28x = 21,463.50 × 8,479.70
  4. Step 4: Simplify right side
    15,553.28x = 182,004,040.95
  5. Step 5: Solve for x
    x = 182,004,040.95/15,553.28
  6. Step 6: Final answer
    x = 11,701.97

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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.