Home / 21,580.24-29,780.04-12,147.52

Finding the Fourth Proportional to 21,580.24, 29,780.04 and 12,147.52

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Solution

The fourth proportional to 21,580.24, 29,780.04 and 12,147.52 is: 16,763.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.24 : 29,780.04 = 12,147.52 : x
  2. Step 2: Convert to fraction form
    21,580.24/29,780.04 = 12,147.52/x
  3. Step 3: Cross multiply
    21,580.24x = 29,780.04 × 12,147.52
  4. Step 4: Simplify right side
    21,580.24x = 361,753,631.50
  5. Step 5: Solve for x
    x = 361,753,631.50/21,580.24
  6. Step 6: Final answer
    x = 16,763.19

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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.