Home / 12,140.42-18,194.22-8,838.05

Finding the Fourth Proportional to 12,140.42, 18,194.22 and 8,838.05

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Solution

The fourth proportional to 12,140.42, 18,194.22 and 8,838.05 is: 13,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.42 : 18,194.22 = 8,838.05 : x
  2. Step 2: Convert to fraction form
    12,140.42/18,194.22 = 8,838.05/x
  3. Step 3: Cross multiply
    12,140.42x = 18,194.22 × 8,838.05
  4. Step 4: Simplify right side
    12,140.42x = 160,801,335.10
  5. Step 5: Solve for x
    x = 160,801,335.10/12,140.42
  6. Step 6: Final answer
    x = 13,245.13

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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.