Home / 12,499.62-18,749.65-4,179.68

Finding the Fourth Proportional to 12,499.62, 18,749.65 and 4,179.68

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Solution

The fourth proportional to 12,499.62, 18,749.65 and 4,179.68 is: 6,269.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,499.62 : 18,749.65 = 4,179.68 : x
  2. Step 2: Convert to fraction form
    12,499.62/18,749.65 = 4,179.68/x
  3. Step 3: Cross multiply
    12,499.62x = 18,749.65 × 4,179.68
  4. Step 4: Simplify right side
    12,499.62x = 78,367,470.08
  5. Step 5: Solve for x
    x = 78,367,470.08/12,499.62
  6. Step 6: Final answer
    x = 6,269.59

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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.