Home / 15,553.42-21,463.58-8,479.69

Finding the Fourth Proportional to 15,553.42, 21,463.58 and 8,479.69

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Solution

The fourth proportional to 15,553.42, 21,463.58 and 8,479.69 is: 11,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.42 : 21,463.58 = 8,479.69 : x
  2. Step 2: Convert to fraction form
    15,553.42/21,463.58 = 8,479.69/x
  3. Step 3: Cross multiply
    15,553.42x = 21,463.58 × 8,479.69
  4. Step 4: Simplify right side
    15,553.42x = 182,004,472.23
  5. Step 5: Solve for x
    x = 182,004,472.23/15,553.42
  6. Step 6: Final answer
    x = 11,701.90

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Half scale
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Double scale
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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.