Home / 20,447.96-28,216.02-11,371.85

Finding the Fourth Proportional to 20,447.96, 28,216.02 and 11,371.85

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Solution

The fourth proportional to 20,447.96, 28,216.02 and 11,371.85 is: 15,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.96 : 28,216.02 = 11,371.85 : x
  2. Step 2: Convert to fraction form
    20,447.96/28,216.02 = 11,371.85/x
  3. Step 3: Cross multiply
    20,447.96x = 28,216.02 × 11,371.85
  4. Step 4: Simplify right side
    20,447.96x = 320,868,205.96
  5. Step 5: Solve for x
    x = 320,868,205.96/20,447.96
  6. Step 6: Final answer
    x = 15,691.95

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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.