Home / 12,387.20-17,099.66-7,607.91

Finding the Fourth Proportional to 12,387.20, 17,099.66 and 7,607.91

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Solution

The fourth proportional to 12,387.20, 17,099.66 and 7,607.91 is: 10,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.20 : 17,099.66 = 7,607.91 : x
  2. Step 2: Convert to fraction form
    12,387.20/17,099.66 = 7,607.91/x
  3. Step 3: Cross multiply
    12,387.20x = 17,099.66 × 7,607.91
  4. Step 4: Simplify right side
    12,387.20x = 130,092,757.45
  5. Step 5: Solve for x
    x = 130,092,757.45/12,387.20
  6. Step 6: Final answer
    x = 10,502.20

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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.