Home / 12,138.85-18,200.98-4,348.27

Finding the Fourth Proportional to 12,138.85, 18,200.98 and 4,348.27

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Solution

The fourth proportional to 12,138.85, 18,200.98 and 4,348.27 is: 6,519.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.85 : 18,200.98 = 4,348.27 : x
  2. Step 2: Convert to fraction form
    12,138.85/18,200.98 = 4,348.27/x
  3. Step 3: Cross multiply
    12,138.85x = 18,200.98 × 4,348.27
  4. Step 4: Simplify right side
    12,138.85x = 79,142,775.30
  5. Step 5: Solve for x
    x = 79,142,775.30/12,138.85
  6. Step 6: Final answer
    x = 6,519.79

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1.5x scale

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.