Home / 12,129.52-18,194.28-4,337.86

Finding the Fourth Proportional to 12,129.52, 18,194.28 and 4,337.86

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Solution

The fourth proportional to 12,129.52, 18,194.28 and 4,337.86 is: 6,506.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.52 : 18,194.28 = 4,337.86 : x
  2. Step 2: Convert to fraction form
    12,129.52/18,194.28 = 4,337.86/x
  3. Step 3: Cross multiply
    12,129.52x = 18,194.28 × 4,337.86
  4. Step 4: Simplify right side
    12,129.52x = 78,924,239.44
  5. Step 5: Solve for x
    x = 78,924,239.44/12,129.52
  6. Step 6: Final answer
    x = 6,506.79

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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.