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Finding the Fourth Proportional to 9,474.90, 14,220.81 and 9,439.62

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Solution

The fourth proportional to 9,474.90, 14,220.81 and 9,439.62 is: 14,167.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,474.90 : 14,220.81 = 9,439.62 : x
  2. Step 2: Convert to fraction form
    9,474.90/14,220.81 = 9,439.62/x
  3. Step 3: Cross multiply
    9,474.90x = 14,220.81 × 9,439.62
  4. Step 4: Simplify right side
    9,474.90x = 134,239,042.49
  5. Step 5: Solve for x
    x = 134,239,042.49/9,474.90
  6. Step 6: Final answer
    x = 14,167.86

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.