Home / 12,408.52-18,612.73-5,387.62

Finding the Fourth Proportional to 12,408.52, 18,612.73 and 5,387.62

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Solution

The fourth proportional to 12,408.52, 18,612.73 and 5,387.62 is: 8,081.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.52 : 18,612.73 = 5,387.62 : x
  2. Step 2: Convert to fraction form
    12,408.52/18,612.73 = 5,387.62/x
  3. Step 3: Cross multiply
    12,408.52x = 18,612.73 × 5,387.62
  4. Step 4: Simplify right side
    12,408.52x = 100,278,316.40
  5. Step 5: Solve for x
    x = 100,278,316.40/12,408.52
  6. Step 6: Final answer
    x = 8,081.41

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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.