Home / 12,191.43-18,255.93-8,438.02

Finding the Fourth Proportional to 12,191.43, 18,255.93 and 8,438.02

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Solution

The fourth proportional to 12,191.43, 18,255.93 and 8,438.02 is: 12,635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.43 : 18,255.93 = 8,438.02 : x
  2. Step 2: Convert to fraction form
    12,191.43/18,255.93 = 8,438.02/x
  3. Step 3: Cross multiply
    12,191.43x = 18,255.93 × 8,438.02
  4. Step 4: Simplify right side
    12,191.43x = 154,043,902.46
  5. Step 5: Solve for x
    x = 154,043,902.46/12,191.43
  6. Step 6: Final answer
    x = 12,635.43

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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.