Home / 20,472.38-30,708.47-17,690.60

Finding the Fourth Proportional to 20,472.38, 30,708.47 and 17,690.60

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Solution

The fourth proportional to 20,472.38, 30,708.47 and 17,690.60 is: 26,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.38 : 30,708.47 = 17,690.60 : x
  2. Step 2: Convert to fraction form
    20,472.38/30,708.47 = 17,690.60/x
  3. Step 3: Cross multiply
    20,472.38x = 30,708.47 × 17,690.60
  4. Step 4: Simplify right side
    20,472.38x = 543,251,170.93
  5. Step 5: Solve for x
    x = 543,251,170.93/20,472.38
  6. Step 6: Final answer
    x = 26,535.81

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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.