Home / 20,761.65-28,650.01-11,808.95

Finding the Fourth Proportional to 20,761.65, 28,650.01 and 11,808.95

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Solution

The fourth proportional to 20,761.65, 28,650.01 and 11,808.95 is: 16,295.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.65 : 28,650.01 = 11,808.95 : x
  2. Step 2: Convert to fraction form
    20,761.65/28,650.01 = 11,808.95/x
  3. Step 3: Cross multiply
    20,761.65x = 28,650.01 × 11,808.95
  4. Step 4: Simplify right side
    20,761.65x = 338,326,607.21
  5. Step 5: Solve for x
    x = 338,326,607.21/20,761.65
  6. Step 6: Final answer
    x = 16,295.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.