Home / 18,187.20-25,097.92-11,113.60

Finding the Fourth Proportional to 18,187.20, 25,097.92 and 11,113.60

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Solution

The fourth proportional to 18,187.20, 25,097.92 and 11,113.60 is: 15,336.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.20 : 25,097.92 = 11,113.60 : x
  2. Step 2: Convert to fraction form
    18,187.20/25,097.92 = 11,113.60/x
  3. Step 3: Cross multiply
    18,187.20x = 25,097.92 × 11,113.60
  4. Step 4: Simplify right side
    18,187.20x = 278,928,243.71
  5. Step 5: Solve for x
    x = 278,928,243.71/18,187.20
  6. Step 6: Final answer
    x = 15,336.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.