Home / 17,143.20-25,716.80-5,457.60

Finding the Fourth Proportional to 17,143.20, 25,716.80 and 5,457.60

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Solution

The fourth proportional to 17,143.20, 25,716.80 and 5,457.60 is: 8,187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.20 : 25,716.80 = 5,457.60 : x
  2. Step 2: Convert to fraction form
    17,143.20/25,716.80 = 5,457.60/x
  3. Step 3: Cross multiply
    17,143.20x = 25,716.80 × 5,457.60
  4. Step 4: Simplify right side
    17,143.20x = 140,352,007.68
  5. Step 5: Solve for x
    x = 140,352,007.68/17,143.20
  6. Step 6: Final answer
    x = 8,187.04

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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.