Home / 21,517.28-32,277.90-8,370.65

Finding the Fourth Proportional to 21,517.28, 32,277.90 and 8,370.65

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Solution

The fourth proportional to 21,517.28, 32,277.90 and 8,370.65 is: 12,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.28 : 32,277.90 = 8,370.65 : x
  2. Step 2: Convert to fraction form
    21,517.28/32,277.90 = 8,370.65/x
  3. Step 3: Cross multiply
    21,517.28x = 32,277.90 × 8,370.65
  4. Step 4: Simplify right side
    21,517.28x = 270,186,842.25
  5. Step 5: Solve for x
    x = 270,186,842.25/21,517.28
  6. Step 6: Final answer
    x = 12,556.74

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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.