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Finding the Fourth Proportional to 8,909.10, 13,363.65 and 8,325.90

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Solution

The fourth proportional to 8,909.10, 13,363.65 and 8,325.90 is: 12,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.10 : 13,363.65 = 8,325.90 : x
  2. Step 2: Convert to fraction form
    8,909.10/13,363.65 = 8,325.90/x
  3. Step 3: Cross multiply
    8,909.10x = 13,363.65 × 8,325.90
  4. Step 4: Simplify right side
    8,909.10x = 111,264,413.54
  5. Step 5: Solve for x
    x = 111,264,413.54/8,909.10
  6. Step 6: Final answer
    x = 12,488.85

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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.