Home / 20,472.57-30,708.86-5,681.61

Finding the Fourth Proportional to 20,472.57, 30,708.86 and 5,681.61

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Solution

The fourth proportional to 20,472.57, 30,708.86 and 5,681.61 is: 8,522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.57 : 30,708.86 = 5,681.61 : x
  2. Step 2: Convert to fraction form
    20,472.57/30,708.86 = 5,681.61/x
  3. Step 3: Cross multiply
    20,472.57x = 30,708.86 × 5,681.61
  4. Step 4: Simplify right side
    20,472.57x = 174,475,737.66
  5. Step 5: Solve for x
    x = 174,475,737.66/20,472.57
  6. Step 6: Final answer
    x = 8,522.42

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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.