Home / 20,752.80-31,123.20-9,063.36

Finding the Fourth Proportional to 20,752.80, 31,123.20 and 9,063.36

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Solution

The fourth proportional to 20,752.80, 31,123.20 and 9,063.36 is: 13,592.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.80 : 31,123.20 = 9,063.36 : x
  2. Step 2: Convert to fraction form
    20,752.80/31,123.20 = 9,063.36/x
  3. Step 3: Cross multiply
    20,752.80x = 31,123.20 × 9,063.36
  4. Step 4: Simplify right side
    20,752.80x = 282,080,765.95
  5. Step 5: Solve for x
    x = 282,080,765.95/20,752.80
  6. Step 6: Final answer
    x = 13,592.42

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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.