Home / 12,439.46-17,169.99-8,193.62

Finding the Fourth Proportional to 12,439.46, 17,169.99 and 8,193.62

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Solution

The fourth proportional to 12,439.46, 17,169.99 and 8,193.62 is: 11,309.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.46 : 17,169.99 = 8,193.62 : x
  2. Step 2: Convert to fraction form
    12,439.46/17,169.99 = 8,193.62/x
  3. Step 3: Cross multiply
    12,439.46x = 17,169.99 × 8,193.62
  4. Step 4: Simplify right side
    12,439.46x = 140,684,385.66
  5. Step 5: Solve for x
    x = 140,684,385.66/12,439.46
  6. Step 6: Final answer
    x = 11,309.52

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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.