Home / 10,800.64-16,200.96-3,404.80

Finding the Fourth Proportional to 10,800.64, 16,200.96 and 3,404.80

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Solution

The fourth proportional to 10,800.64, 16,200.96 and 3,404.80 is: 5,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.64 : 16,200.96 = 3,404.80 : x
  2. Step 2: Convert to fraction form
    10,800.64/16,200.96 = 3,404.80/x
  3. Step 3: Cross multiply
    10,800.64x = 16,200.96 × 3,404.80
  4. Step 4: Simplify right side
    10,800.64x = 55,161,028.61
  5. Step 5: Solve for x
    x = 55,161,028.61/10,800.64
  6. Step 6: Final answer
    x = 5,107.20

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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.