Home / 20,761.20-31,153.14-9,673.11

Finding the Fourth Proportional to 20,761.20, 31,153.14 and 9,673.11

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Solution

The fourth proportional to 20,761.20, 31,153.14 and 9,673.11 is: 14,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.20 : 31,153.14 = 9,673.11 : x
  2. Step 2: Convert to fraction form
    20,761.20/31,153.14 = 9,673.11/x
  3. Step 3: Cross multiply
    20,761.20x = 31,153.14 × 9,673.11
  4. Step 4: Simplify right side
    20,761.20x = 301,347,750.07
  5. Step 5: Solve for x
    x = 301,347,750.07/20,761.20
  6. Step 6: Final answer
    x = 14,514.95

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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.