Home / 12,412.39-18,608.11-5,387.11

Finding the Fourth Proportional to 12,412.39, 18,608.11 and 5,387.11

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Solution

The fourth proportional to 12,412.39, 18,608.11 and 5,387.11 is: 8,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.39 : 18,608.11 = 5,387.11 : x
  2. Step 2: Convert to fraction form
    12,412.39/18,608.11 = 5,387.11/x
  3. Step 3: Cross multiply
    12,412.39x = 18,608.11 × 5,387.11
  4. Step 4: Simplify right side
    12,412.39x = 100,243,815.49
  5. Step 5: Solve for x
    x = 100,243,815.49/12,412.39
  6. Step 6: Final answer
    x = 8,076.11

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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.