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Finding the Fourth Proportional to 10,512.60, 15,768.90 and 8,568.60

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Solution

The fourth proportional to 10,512.60, 15,768.90 and 8,568.60 is: 12,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512.60 : 15,768.90 = 8,568.60 : x
  2. Step 2: Convert to fraction form
    10,512.60/15,768.90 = 8,568.60/x
  3. Step 3: Cross multiply
    10,512.60x = 15,768.90 × 8,568.60
  4. Step 4: Simplify right side
    10,512.60x = 135,117,396.54
  5. Step 5: Solve for x
    x = 135,117,396.54/10,512.60
  6. Step 6: Final answer
    x = 12,852.90

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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.