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Finding the Fourth Proportional to 28,132.08, 42,191.85 and 8,408.08

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Solution

The fourth proportional to 28,132.08, 42,191.85 and 8,408.08 is: 12,610.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.08 : 42,191.85 = 8,408.08 : x
  2. Step 2: Convert to fraction form
    28,132.08/42,191.85 = 8,408.08/x
  3. Step 3: Cross multiply
    28,132.08x = 42,191.85 × 8,408.08
  4. Step 4: Simplify right side
    28,132.08x = 354,752,313.14
  5. Step 5: Solve for x
    x = 354,752,313.14/28,132.08
  6. Step 6: Final answer
    x = 12,610.24

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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.