Home / 10,986.60-16,469.10-5,440.80

Finding the Fourth Proportional to 10,986.60, 16,469.10 and 5,440.80

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Solution

The fourth proportional to 10,986.60, 16,469.10 and 5,440.80 is: 8,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.60 : 16,469.10 = 5,440.80 : x
  2. Step 2: Convert to fraction form
    10,986.60/16,469.10 = 5,440.80/x
  3. Step 3: Cross multiply
    10,986.60x = 16,469.10 × 5,440.80
  4. Step 4: Simplify right side
    10,986.60x = 89,605,079.28
  5. Step 5: Solve for x
    x = 89,605,079.28/10,986.60
  6. Step 6: Final answer
    x = 8,155.85

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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.