Home / 21,609.75-32,391.19-11,065.31

Finding the Fourth Proportional to 21,609.75, 32,391.19 and 11,065.31

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Solution

The fourth proportional to 21,609.75, 32,391.19 and 11,065.31 is: 16,585.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.75 : 32,391.19 = 11,065.31 : x
  2. Step 2: Convert to fraction form
    21,609.75/32,391.19 = 11,065.31/x
  3. Step 3: Cross multiply
    21,609.75x = 32,391.19 × 11,065.31
  4. Step 4: Simplify right side
    21,609.75x = 358,418,531.96
  5. Step 5: Solve for x
    x = 358,418,531.96/21,609.75
  6. Step 6: Final answer
    x = 16,585.96

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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.