Home / 12,508.48-18,769.56-4,191.04

Finding the Fourth Proportional to 12,508.48, 18,769.56 and 4,191.04

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Solution

The fourth proportional to 12,508.48, 18,769.56 and 4,191.04 is: 6,288.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.48 : 18,769.56 = 4,191.04 : x
  2. Step 2: Convert to fraction form
    12,508.48/18,769.56 = 4,191.04/x
  3. Step 3: Cross multiply
    12,508.48x = 18,769.56 × 4,191.04
  4. Step 4: Simplify right side
    12,508.48x = 78,663,976.74
  5. Step 5: Solve for x
    x = 78,663,976.74/12,508.48
  6. Step 6: Final answer
    x = 6,288.85

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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.