Home / 13,352.40-20,028.62-9,179.78

Finding the Fourth Proportional to 13,352.40, 20,028.62 and 9,179.78

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Solution

The fourth proportional to 13,352.40, 20,028.62 and 9,179.78 is: 13,769.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.40 : 20,028.62 = 9,179.78 : x
  2. Step 2: Convert to fraction form
    13,352.40/20,028.62 = 9,179.78/x
  3. Step 3: Cross multiply
    13,352.40x = 20,028.62 × 9,179.78
  4. Step 4: Simplify right side
    13,352.40x = 183,858,329.48
  5. Step 5: Solve for x
    x = 183,858,329.48/13,352.40
  6. Step 6: Final answer
    x = 13,769.68

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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.