Home / 20,724.80-31,026.24-13,691.84

Finding the Fourth Proportional to 20,724.80, 31,026.24 and 13,691.84

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Solution

The fourth proportional to 20,724.80, 31,026.24 and 13,691.84 is: 20,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.80 : 31,026.24 = 13,691.84 : x
  2. Step 2: Convert to fraction form
    20,724.80/31,026.24 = 13,691.84/x
  3. Step 3: Cross multiply
    20,724.80x = 31,026.24 × 13,691.84
  4. Step 4: Simplify right side
    20,724.80x = 424,806,313.88
  5. Step 5: Solve for x
    x = 424,806,313.88/20,724.80
  6. Step 6: Final answer
    x = 20,497.49

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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.