Home / 20,350.61-28,085.24-11,397.95

Finding the Fourth Proportional to 20,350.61, 28,085.24 and 11,397.95

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Solution

The fourth proportional to 20,350.61, 28,085.24 and 11,397.95 is: 15,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.61 : 28,085.24 = 11,397.95 : x
  2. Step 2: Convert to fraction form
    20,350.61/28,085.24 = 11,397.95/x
  3. Step 3: Cross multiply
    20,350.61x = 28,085.24 × 11,397.95
  4. Step 4: Simplify right side
    20,350.61x = 320,114,104.27
  5. Step 5: Solve for x
    x = 320,114,104.27/20,350.61
  6. Step 6: Final answer
    x = 15,729.95

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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.