Home / 12,515.31-18,772.97-4,192.97

Finding the Fourth Proportional to 12,515.31, 18,772.97 and 4,192.97

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Solution

The fourth proportional to 12,515.31, 18,772.97 and 4,192.97 is: 6,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.31 : 18,772.97 = 4,192.97 : x
  2. Step 2: Convert to fraction form
    12,515.31/18,772.97 = 4,192.97/x
  3. Step 3: Cross multiply
    12,515.31x = 18,772.97 × 4,192.97
  4. Step 4: Simplify right side
    12,515.31x = 78,714,385.19
  5. Step 5: Solve for x
    x = 78,714,385.19/12,515.31
  6. Step 6: Final answer
    x = 6,289.45

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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.