Home / 20,167.38-30,259.78-7,691.15

Finding the Fourth Proportional to 20,167.38, 30,259.78 and 7,691.15

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Solution

The fourth proportional to 20,167.38, 30,259.78 and 7,691.15 is: 11,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.38 : 30,259.78 = 7,691.15 : x
  2. Step 2: Convert to fraction form
    20,167.38/30,259.78 = 7,691.15/x
  3. Step 3: Cross multiply
    20,167.38x = 30,259.78 × 7,691.15
  4. Step 4: Simplify right side
    20,167.38x = 232,732,563.37
  5. Step 5: Solve for x
    x = 232,732,563.37/20,167.38
  6. Step 6: Final answer
    x = 11,540.05

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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.