Home / 20,952.50-28,914.45-12,571.70

Finding the Fourth Proportional to 20,952.50, 28,914.45 and 12,571.70

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Solution

The fourth proportional to 20,952.50, 28,914.45 and 12,571.70 is: 17,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.50 : 28,914.45 = 12,571.70 : x
  2. Step 2: Convert to fraction form
    20,952.50/28,914.45 = 12,571.70/x
  3. Step 3: Cross multiply
    20,952.50x = 28,914.45 × 12,571.70
  4. Step 4: Simplify right side
    20,952.50x = 363,503,791.07
  5. Step 5: Solve for x
    x = 363,503,791.07/20,952.50
  6. Step 6: Final answer
    x = 17,348.95

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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.