Home / 12,320.56-18,481.68-4,002.40

Finding the Fourth Proportional to 12,320.56, 18,481.68 and 4,002.40

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Solution

The fourth proportional to 12,320.56, 18,481.68 and 4,002.40 is: 6,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.56 : 18,481.68 = 4,002.40 : x
  2. Step 2: Convert to fraction form
    12,320.56/18,481.68 = 4,002.40/x
  3. Step 3: Cross multiply
    12,320.56x = 18,481.68 × 4,002.40
  4. Step 4: Simplify right side
    12,320.56x = 73,971,076.03
  5. Step 5: Solve for x
    x = 73,971,076.03/12,320.56
  6. Step 6: Final answer
    x = 6,003.87

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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.