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Finding the Fourth Proportional to 10,608.60, 15,912.90 and 9,766.20

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Solution

The fourth proportional to 10,608.60, 15,912.90 and 9,766.20 is: 14,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,608.60 : 15,912.90 = 9,766.20 : x
  2. Step 2: Convert to fraction form
    10,608.60/15,912.90 = 9,766.20/x
  3. Step 3: Cross multiply
    10,608.60x = 15,912.90 × 9,766.20
  4. Step 4: Simplify right side
    10,608.60x = 155,408,563.98
  5. Step 5: Solve for x
    x = 155,408,563.98/10,608.60
  6. Step 6: Final answer
    x = 14,649.30

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Similar ratio
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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.