Home / 12,177.42-18,255.16-4,380.75

Finding the Fourth Proportional to 12,177.42, 18,255.16 and 4,380.75

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Solution

The fourth proportional to 12,177.42, 18,255.16 and 4,380.75 is: 6,567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.42 : 18,255.16 = 4,380.75 : x
  2. Step 2: Convert to fraction form
    12,177.42/18,255.16 = 4,380.75/x
  3. Step 3: Cross multiply
    12,177.42x = 18,255.16 × 4,380.75
  4. Step 4: Simplify right side
    12,177.42x = 79,971,292.17
  5. Step 5: Solve for x
    x = 79,971,292.17/12,177.42
  6. Step 6: Final answer
    x = 6,567.18

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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.