Home / 14,575.11-20,111.81-8,287.62

Finding the Fourth Proportional to 14,575.11, 20,111.81 and 8,287.62

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Solution

The fourth proportional to 14,575.11, 20,111.81 and 8,287.62 is: 11,435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.11 : 20,111.81 = 8,287.62 : x
  2. Step 2: Convert to fraction form
    14,575.11/20,111.81 = 8,287.62/x
  3. Step 3: Cross multiply
    14,575.11x = 20,111.81 × 8,287.62
  4. Step 4: Simplify right side
    14,575.11x = 166,678,997.35
  5. Step 5: Solve for x
    x = 166,678,997.35/14,575.11
  6. Step 6: Final answer
    x = 11,435.87

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Half scale
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Double scale
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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.