Home / 20,690.38-31,035.63-7,542.73

Finding the Fourth Proportional to 20,690.38, 31,035.63 and 7,542.73

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Solution

The fourth proportional to 20,690.38, 31,035.63 and 7,542.73 is: 11,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.38 : 31,035.63 = 7,542.73 : x
  2. Step 2: Convert to fraction form
    20,690.38/31,035.63 = 7,542.73/x
  3. Step 3: Cross multiply
    20,690.38x = 31,035.63 × 7,542.73
  4. Step 4: Simplify right side
    20,690.38x = 234,093,377.47
  5. Step 5: Solve for x
    x = 234,093,377.47/20,690.38
  6. Step 6: Final answer
    x = 11,314.12

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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.