Home / 12,479.12-17,213.32-7,998.24

Finding the Fourth Proportional to 12,479.12, 17,213.32 and 7,998.24

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Solution

The fourth proportional to 12,479.12, 17,213.32 and 7,998.24 is: 11,032.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.12 : 17,213.32 = 7,998.24 : x
  2. Step 2: Convert to fraction form
    12,479.12/17,213.32 = 7,998.24/x
  3. Step 3: Cross multiply
    12,479.12x = 17,213.32 × 7,998.24
  4. Step 4: Simplify right side
    12,479.12x = 137,676,264.56
  5. Step 5: Solve for x
    x = 137,676,264.56/12,479.12
  6. Step 6: Final answer
    x = 11,032.53

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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.