Home / 21,648.45-32,489.68-11,118.04

Finding the Fourth Proportional to 21,648.45, 32,489.68 and 11,118.04

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Solution

The fourth proportional to 21,648.45, 32,489.68 and 11,118.04 is: 16,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.45 : 32,489.68 = 11,118.04 : x
  2. Step 2: Convert to fraction form
    21,648.45/32,489.68 = 11,118.04/x
  3. Step 3: Cross multiply
    21,648.45x = 32,489.68 × 11,118.04
  4. Step 4: Simplify right side
    21,648.45x = 361,221,506.24
  5. Step 5: Solve for x
    x = 361,221,506.24/21,648.45
  6. Step 6: Final answer
    x = 16,685.79

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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.