Home / 21,577.80-29,774.61-12,144.54

Finding the Fourth Proportional to 21,577.80, 29,774.61 and 12,144.54

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Solution

The fourth proportional to 21,577.80, 29,774.61 and 12,144.54 is: 16,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.80 : 29,774.61 = 12,144.54 : x
  2. Step 2: Convert to fraction form
    21,577.80/29,774.61 = 12,144.54/x
  3. Step 3: Cross multiply
    21,577.80x = 29,774.61 × 12,144.54
  4. Step 4: Simplify right side
    21,577.80x = 361,598,942.13
  5. Step 5: Solve for x
    x = 361,598,942.13/21,577.80
  6. Step 6: Final answer
    x = 16,757.92

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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.