Home / 39,234.17-54,144.11-21,330.16

Finding the Fourth Proportional to 39,234.17, 54,144.11 and 21,330.16

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Solution

The fourth proportional to 39,234.17, 54,144.11 and 21,330.16 is: 29,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,234.17 : 54,144.11 = 21,330.16 : x
  2. Step 2: Convert to fraction form
    39,234.17/54,144.11 = 21,330.16/x
  3. Step 3: Cross multiply
    39,234.17x = 54,144.11 × 21,330.16
  4. Step 4: Simplify right side
    39,234.17x = 1,154,902,529.36
  5. Step 5: Solve for x
    x = 1,154,902,529.36/39,234.17
  6. Step 6: Final answer
    x = 29,436.14

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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.