Home / 14,764.80-22,147.20-12,161.28

Finding the Fourth Proportional to 14,764.80, 22,147.20 and 12,161.28

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Solution

The fourth proportional to 14,764.80, 22,147.20 and 12,161.28 is: 18,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,764.80 : 22,147.20 = 12,161.28 : x
  2. Step 2: Convert to fraction form
    14,764.80/22,147.20 = 12,161.28/x
  3. Step 3: Cross multiply
    14,764.80x = 22,147.20 × 12,161.28
  4. Step 4: Simplify right side
    14,764.80x = 269,338,300.42
  5. Step 5: Solve for x
    x = 269,338,300.42/14,764.80
  6. Step 6: Final answer
    x = 18,241.92

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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.