Home / 12,192.40-18,290.60-4,292.88

Finding the Fourth Proportional to 12,192.40, 18,290.60 and 4,292.88

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Solution

The fourth proportional to 12,192.40, 18,290.60 and 4,292.88 is: 6,440.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.40 : 18,290.60 = 4,292.88 : x
  2. Step 2: Convert to fraction form
    12,192.40/18,290.60 = 4,292.88/x
  3. Step 3: Cross multiply
    12,192.40x = 18,290.60 × 4,292.88
  4. Step 4: Simplify right side
    12,192.40x = 78,519,350.93
  5. Step 5: Solve for x
    x = 78,519,350.93/12,192.40
  6. Step 6: Final answer
    x = 6,440.02

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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.