Home / 21,169.38-29,213.24-11,609.40

Finding the Fourth Proportional to 21,169.38, 29,213.24 and 11,609.40

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Solution

The fourth proportional to 21,169.38, 29,213.24 and 11,609.40 is: 16,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.38 : 29,213.24 = 11,609.40 : x
  2. Step 2: Convert to fraction form
    21,169.38/29,213.24 = 11,609.40/x
  3. Step 3: Cross multiply
    21,169.38x = 29,213.24 × 11,609.40
  4. Step 4: Simplify right side
    21,169.38x = 339,148,188.46
  5. Step 5: Solve for x
    x = 339,148,188.46/21,169.38
  6. Step 6: Final answer
    x = 16,020.70

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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.