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Finding the Fourth Proportional to 8,660.40, 13,000.20 and 8,096.40

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Solution

The fourth proportional to 8,660.40, 13,000.20 and 8,096.40 is: 12,153.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.40 : 13,000.20 = 8,096.40 : x
  2. Step 2: Convert to fraction form
    8,660.40/13,000.20 = 8,096.40/x
  3. Step 3: Cross multiply
    8,660.40x = 13,000.20 × 8,096.40
  4. Step 4: Simplify right side
    8,660.40x = 105,254,819.28
  5. Step 5: Solve for x
    x = 105,254,819.28/8,660.40
  6. Step 6: Final answer
    x = 12,153.57

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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.