Home / 12,458.40-18,687.60-9,177.90

Finding the Fourth Proportional to 12,458.40, 18,687.60 and 9,177.90

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Solution

The fourth proportional to 12,458.40, 18,687.60 and 9,177.90 is: 13,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.40 : 18,687.60 = 9,177.90 : x
  2. Step 2: Convert to fraction form
    12,458.40/18,687.60 = 9,177.90/x
  3. Step 3: Cross multiply
    12,458.40x = 18,687.60 × 9,177.90
  4. Step 4: Simplify right side
    12,458.40x = 171,512,924.04
  5. Step 5: Solve for x
    x = 171,512,924.04/12,458.40
  6. Step 6: Final answer
    x = 13,766.85

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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.