Home / 13,382.40-18,467.90-7,414.19

Finding the Fourth Proportional to 13,382.40, 18,467.90 and 7,414.19

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Solution

The fourth proportional to 13,382.40, 18,467.90 and 7,414.19 is: 10,231.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.40 : 18,467.90 = 7,414.19 : x
  2. Step 2: Convert to fraction form
    13,382.40/18,467.90 = 7,414.19/x
  3. Step 3: Cross multiply
    13,382.40x = 18,467.90 × 7,414.19
  4. Step 4: Simplify right side
    13,382.40x = 136,924,519.50
  5. Step 5: Solve for x
    x = 136,924,519.50/13,382.40
  6. Step 6: Final answer
    x = 10,231.69

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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.