Home / 13,141.74-18,142.11-8,366.43

Finding the Fourth Proportional to 13,141.74, 18,142.11 and 8,366.43

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Solution

The fourth proportional to 13,141.74, 18,142.11 and 8,366.43 is: 11,549.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.74 : 18,142.11 = 8,366.43 : x
  2. Step 2: Convert to fraction form
    13,141.74/18,142.11 = 8,366.43/x
  3. Step 3: Cross multiply
    13,141.74x = 18,142.11 × 8,366.43
  4. Step 4: Simplify right side
    13,141.74x = 151,784,693.37
  5. Step 5: Solve for x
    x = 151,784,693.37/13,141.74
  6. Step 6: Final answer
    x = 11,549.82

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