Home / 20,839.82-31,327.47-16,724.92

Finding the Fourth Proportional to 20,839.82, 31,327.47 and 16,724.92

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Solution

The fourth proportional to 20,839.82, 31,327.47 and 16,724.92 is: 25,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.82 : 31,327.47 = 16,724.92 : x
  2. Step 2: Convert to fraction form
    20,839.82/31,327.47 = 16,724.92/x
  3. Step 3: Cross multiply
    20,839.82x = 31,327.47 × 16,724.92
  4. Step 4: Simplify right side
    20,839.82x = 523,949,429.55
  5. Step 5: Solve for x
    x = 523,949,429.55/20,839.82
  6. Step 6: Final answer
    x = 25,141.74

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1.5x scale

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.