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Finding the Fourth Proportional to 14,167.81, 21,251.72 and 14,147.31

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Solution

The fourth proportional to 14,167.81, 21,251.72 and 14,147.31 is: 21,220.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,167.81 : 21,251.72 = 14,147.31 : x
  2. Step 2: Convert to fraction form
    14,167.81/21,251.72 = 14,147.31/x
  3. Step 3: Cross multiply
    14,167.81x = 21,251.72 × 14,147.31
  4. Step 4: Simplify right side
    14,167.81x = 300,654,586.82
  5. Step 5: Solve for x
    x = 300,654,586.82/14,167.81
  6. Step 6: Final answer
    x = 21,220.96

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.