Home / 20,716.25-28,592.13-12,217.85

Finding the Fourth Proportional to 20,716.25, 28,592.13 and 12,217.85

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Solution

The fourth proportional to 20,716.25, 28,592.13 and 12,217.85 is: 16,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.25 : 28,592.13 = 12,217.85 : x
  2. Step 2: Convert to fraction form
    20,716.25/28,592.13 = 12,217.85/x
  3. Step 3: Cross multiply
    20,716.25x = 28,592.13 × 12,217.85
  4. Step 4: Simplify right side
    20,716.25x = 349,334,355.52
  5. Step 5: Solve for x
    x = 349,334,355.52/20,716.25
  6. Step 6: Final answer
    x = 16,862.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.