Home / 10,983.20-16,485.60-5,442.80

Finding the Fourth Proportional to 10,983.20, 16,485.60 and 5,442.80

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Solution

The fourth proportional to 10,983.20, 16,485.60 and 5,442.80 is: 8,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,983.20 : 16,485.60 = 5,442.80 : x
  2. Step 2: Convert to fraction form
    10,983.20/16,485.60 = 5,442.80/x
  3. Step 3: Cross multiply
    10,983.20x = 16,485.60 × 5,442.80
  4. Step 4: Simplify right side
    10,983.20x = 89,727,823.68
  5. Step 5: Solve for x
    x = 89,727,823.68/10,983.20
  6. Step 6: Final answer
    x = 8,169.55

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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.