Home / 10,775.20-16,143.60-8,816.80

Finding the Fourth Proportional to 10,775.20, 16,143.60 and 8,816.80

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Solution

The fourth proportional to 10,775.20, 16,143.60 and 8,816.80 is: 13,209.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,775.20 : 16,143.60 = 8,816.80 : x
  2. Step 2: Convert to fraction form
    10,775.20/16,143.60 = 8,816.80/x
  3. Step 3: Cross multiply
    10,775.20x = 16,143.60 × 8,816.80
  4. Step 4: Simplify right side
    10,775.20x = 142,334,892.48
  5. Step 5: Solve for x
    x = 142,334,892.48/10,775.20
  6. Step 6: Final answer
    x = 13,209.49

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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.