Home / 22,278.60-30,745.38-12,207.90

Finding the Fourth Proportional to 22,278.60, 30,745.38 and 12,207.90

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Solution

The fourth proportional to 22,278.60, 30,745.38 and 12,207.90 is: 16,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.60 : 30,745.38 = 12,207.90 : x
  2. Step 2: Convert to fraction form
    22,278.60/30,745.38 = 12,207.90/x
  3. Step 3: Cross multiply
    22,278.60x = 30,745.38 × 12,207.90
  4. Step 4: Simplify right side
    22,278.60x = 375,336,524.50
  5. Step 5: Solve for x
    x = 375,336,524.50/22,278.60
  6. Step 6: Final answer
    x = 16,847.40

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1.5x scale

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.