Home / 13,165.38-18,169.41-7,498.89

Finding the Fourth Proportional to 13,165.38, 18,169.41 and 7,498.89

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Solution

The fourth proportional to 13,165.38, 18,169.41 and 7,498.89 is: 10,349.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.38 : 18,169.41 = 7,498.89 : x
  2. Step 2: Convert to fraction form
    13,165.38/18,169.41 = 7,498.89/x
  3. Step 3: Cross multiply
    13,165.38x = 18,169.41 × 7,498.89
  4. Step 4: Simplify right side
    13,165.38x = 136,250,406.95
  5. Step 5: Solve for x
    x = 136,250,406.95/13,165.38
  6. Step 6: Final answer
    x = 10,349.14

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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.