Home / 12,395.50-18,593.25-7,781.74

Finding the Fourth Proportional to 12,395.50, 18,593.25 and 7,781.74

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Solution

The fourth proportional to 12,395.50, 18,593.25 and 7,781.74 is: 11,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.50 : 18,593.25 = 7,781.74 : x
  2. Step 2: Convert to fraction form
    12,395.50/18,593.25 = 7,781.74/x
  3. Step 3: Cross multiply
    12,395.50x = 18,593.25 × 7,781.74
  4. Step 4: Simplify right side
    12,395.50x = 144,687,837.26
  5. Step 5: Solve for x
    x = 144,687,837.26/12,395.50
  6. Step 6: Final answer
    x = 11,672.61

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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.