Home / 18,358.40-25,334.64-9,974.72

Finding the Fourth Proportional to 18,358.40, 25,334.64 and 9,974.72

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Solution

The fourth proportional to 18,358.40, 25,334.64 and 9,974.72 is: 13,765.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.40 : 25,334.64 = 9,974.72 : x
  2. Step 2: Convert to fraction form
    18,358.40/25,334.64 = 9,974.72/x
  3. Step 3: Cross multiply
    18,358.40x = 25,334.64 × 9,974.72
  4. Step 4: Simplify right side
    18,358.40x = 252,705,940.30
  5. Step 5: Solve for x
    x = 252,705,940.30/18,358.40
  6. Step 6: Final answer
    x = 13,765.14

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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.