Home / 9,939.62-13,708.68-8,742.08

Finding the Fourth Proportional to 9,939.62, 13,708.68 and 8,742.08

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Solution

The fourth proportional to 9,939.62, 13,708.68 and 8,742.08 is: 12,057.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.62 : 13,708.68 = 8,742.08 : x
  2. Step 2: Convert to fraction form
    9,939.62/13,708.68 = 8,742.08/x
  3. Step 3: Cross multiply
    9,939.62x = 13,708.68 × 8,742.08
  4. Step 4: Simplify right side
    9,939.62x = 119,842,377.25
  5. Step 5: Solve for x
    x = 119,842,377.25/9,939.62
  6. Step 6: Final answer
    x = 12,057.04

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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.