Home / 20,672.80-31,003.68-8,983.24

Finding the Fourth Proportional to 20,672.80, 31,003.68 and 8,983.24

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Solution

The fourth proportional to 20,672.80, 31,003.68 and 8,983.24 is: 13,472.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.80 : 31,003.68 = 8,983.24 : x
  2. Step 2: Convert to fraction form
    20,672.80/31,003.68 = 8,983.24/x
  3. Step 3: Cross multiply
    20,672.80x = 31,003.68 × 8,983.24
  4. Step 4: Simplify right side
    20,672.80x = 278,513,498.32
  5. Step 5: Solve for x
    x = 278,513,498.32/20,672.80
  6. Step 6: Final answer
    x = 13,472.46

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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.