Home / 12,851.28-17,739.66-8,376.12

Finding the Fourth Proportional to 12,851.28, 17,739.66 and 8,376.12

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Solution

The fourth proportional to 12,851.28, 17,739.66 and 8,376.12 is: 11,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.28 : 17,739.66 = 8,376.12 : x
  2. Step 2: Convert to fraction form
    12,851.28/17,739.66 = 8,376.12/x
  3. Step 3: Cross multiply
    12,851.28x = 17,739.66 × 8,376.12
  4. Step 4: Simplify right side
    12,851.28x = 148,589,520.92
  5. Step 5: Solve for x
    x = 148,589,520.92/12,851.28
  6. Step 6: Final answer
    x = 11,562.24

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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.