Home / 20,716.20-31,062.96-16,320.60

Finding the Fourth Proportional to 20,716.20, 31,062.96 and 16,320.60

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Solution

The fourth proportional to 20,716.20, 31,062.96 and 16,320.60 is: 24,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.20 : 31,062.96 = 16,320.60 : x
  2. Step 2: Convert to fraction form
    20,716.20/31,062.96 = 16,320.60/x
  3. Step 3: Cross multiply
    20,716.20x = 31,062.96 × 16,320.60
  4. Step 4: Simplify right side
    20,716.20x = 506,966,144.98
  5. Step 5: Solve for x
    x = 506,966,144.98/20,716.20
  6. Step 6: Final answer
    x = 24,471.97

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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.