Home / 12,230.22-18,347.80-3,909.98

Finding the Fourth Proportional to 12,230.22, 18,347.80 and 3,909.98

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Solution

The fourth proportional to 12,230.22, 18,347.80 and 3,909.98 is: 5,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,230.22 : 18,347.80 = 3,909.98 : x
  2. Step 2: Convert to fraction form
    12,230.22/18,347.80 = 3,909.98/x
  3. Step 3: Cross multiply
    12,230.22x = 18,347.80 × 3,909.98
  4. Step 4: Simplify right side
    12,230.22x = 71,739,531.04
  5. Step 5: Solve for x
    x = 71,739,531.04/12,230.22
  6. Step 6: Final answer
    x = 5,865.76

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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.