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Finding the Fourth Proportional to 9,885.20, 14,806.20 and 8,589.20

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Solution

The fourth proportional to 9,885.20, 14,806.20 and 8,589.20 is: 12,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.20 : 14,806.20 = 8,589.20 : x
  2. Step 2: Convert to fraction form
    9,885.20/14,806.20 = 8,589.20/x
  3. Step 3: Cross multiply
    9,885.20x = 14,806.20 × 8,589.20
  4. Step 4: Simplify right side
    9,885.20x = 127,173,413.04
  5. Step 5: Solve for x
    x = 127,173,413.04/9,885.20
  6. Step 6: Final answer
    x = 12,865.03

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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.