Home / 15,454.32-21,337.20-9,168.72

Finding the Fourth Proportional to 15,454.32, 21,337.20 and 9,168.72

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Solution

The fourth proportional to 15,454.32, 21,337.20 and 9,168.72 is: 12,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.32 : 21,337.20 = 9,168.72 : x
  2. Step 2: Convert to fraction form
    15,454.32/21,337.20 = 9,168.72/x
  3. Step 3: Cross multiply
    15,454.32x = 21,337.20 × 9,168.72
  4. Step 4: Simplify right side
    15,454.32x = 195,634,812.38
  5. Step 5: Solve for x
    x = 195,634,812.38/15,454.32
  6. Step 6: Final answer
    x = 12,658.91

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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.