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Finding the Fourth Proportional to 13,292.81, 18,344.42 and 7,324.48

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Solution

The fourth proportional to 13,292.81, 18,344.42 and 7,324.48 is: 10,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.81 : 18,344.42 = 7,324.48 : x
  2. Step 2: Convert to fraction form
    13,292.81/18,344.42 = 7,324.48/x
  3. Step 3: Cross multiply
    13,292.81x = 18,344.42 × 7,324.48
  4. Step 4: Simplify right side
    13,292.81x = 134,363,337.40
  5. Step 5: Solve for x
    x = 134,363,337.40/13,292.81
  6. Step 6: Final answer
    x = 10,107.97

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