Home / 20,761.74-31,134.42-9,066.78

Finding the Fourth Proportional to 20,761.74, 31,134.42 and 9,066.78

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Solution

The fourth proportional to 20,761.74, 31,134.42 and 9,066.78 is: 13,596.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.74 : 31,134.42 = 9,066.78 : x
  2. Step 2: Convert to fraction form
    20,761.74/31,134.42 = 9,066.78/x
  3. Step 3: Cross multiply
    20,761.74x = 31,134.42 × 9,066.78
  4. Step 4: Simplify right side
    20,761.74x = 282,288,936.57
  5. Step 5: Solve for x
    x = 282,288,936.57/20,761.74
  6. Step 6: Final answer
    x = 13,596.59

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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.