Home / 12,180.60-18,278.10-4,388.40

Finding the Fourth Proportional to 12,180.60, 18,278.10 and 4,388.40

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Solution

The fourth proportional to 12,180.60, 18,278.10 and 4,388.40 is: 6,585.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.60 : 18,278.10 = 4,388.40 : x
  2. Step 2: Convert to fraction form
    12,180.60/18,278.10 = 4,388.40/x
  3. Step 3: Cross multiply
    12,180.60x = 18,278.10 × 4,388.40
  4. Step 4: Simplify right side
    12,180.60x = 80,211,614.04
  5. Step 5: Solve for x
    x = 80,211,614.04/12,180.60
  6. Step 6: Final answer
    x = 6,585.19

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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.