Home / 10,664.80-15,997.28-4,089.42

Finding the Fourth Proportional to 10,664.80, 15,997.28 and 4,089.42

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Solution

The fourth proportional to 10,664.80, 15,997.28 and 4,089.42 is: 6,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,664.80 : 15,997.28 = 4,089.42 : x
  2. Step 2: Convert to fraction form
    10,664.80/15,997.28 = 4,089.42/x
  3. Step 3: Cross multiply
    10,664.80x = 15,997.28 × 4,089.42
  4. Step 4: Simplify right side
    10,664.80x = 65,419,596.78
  5. Step 5: Solve for x
    x = 65,419,596.78/10,664.80
  6. Step 6: Final answer
    x = 6,134.16

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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.