Home / 15,472.38-21,349.11-9,186.30

Finding the Fourth Proportional to 15,472.38, 21,349.11 and 9,186.30

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Solution

The fourth proportional to 15,472.38, 21,349.11 and 9,186.30 is: 12,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.38 : 21,349.11 = 9,186.30 : x
  2. Step 2: Convert to fraction form
    15,472.38/21,349.11 = 9,186.30/x
  3. Step 3: Cross multiply
    15,472.38x = 21,349.11 × 9,186.30
  4. Step 4: Simplify right side
    15,472.38x = 196,119,329.19
  5. Step 5: Solve for x
    x = 196,119,329.19/15,472.38
  6. Step 6: Final answer
    x = 12,675.45

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Half scale
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Double scale
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Similar ratio
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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.