Home / 21,619.76-32,438.12-8,469.88

Finding the Fourth Proportional to 21,619.76, 32,438.12 and 8,469.88

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Solution

The fourth proportional to 21,619.76, 32,438.12 and 8,469.88 is: 12,708.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.76 : 32,438.12 = 8,469.88 : x
  2. Step 2: Convert to fraction form
    21,619.76/32,438.12 = 8,469.88/x
  3. Step 3: Cross multiply
    21,619.76x = 32,438.12 × 8,469.88
  4. Step 4: Simplify right side
    21,619.76x = 274,746,983.83
  5. Step 5: Solve for x
    x = 274,746,983.83/21,619.76
  6. Step 6: Final answer
    x = 12,708.14

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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.