Home / 12,481.89-18,724.65-5,086.80

Finding the Fourth Proportional to 12,481.89, 18,724.65 and 5,086.80

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Solution

The fourth proportional to 12,481.89, 18,724.65 and 5,086.80 is: 7,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.89 : 18,724.65 = 5,086.80 : x
  2. Step 2: Convert to fraction form
    12,481.89/18,724.65 = 5,086.80/x
  3. Step 3: Cross multiply
    12,481.89x = 18,724.65 × 5,086.80
  4. Step 4: Simplify right side
    12,481.89x = 95,248,549.62
  5. Step 5: Solve for x
    x = 95,248,549.62/12,481.89
  6. Step 6: Final answer
    x = 7,630.94

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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.