Home / 13,604.60-20,385.30-10,105.40

Finding the Fourth Proportional to 13,604.60, 20,385.30 and 10,105.40

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Solution

The fourth proportional to 13,604.60, 20,385.30 and 10,105.40 is: 15,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.60 : 20,385.30 = 10,105.40 : x
  2. Step 2: Convert to fraction form
    13,604.60/20,385.30 = 10,105.40/x
  3. Step 3: Cross multiply
    13,604.60x = 20,385.30 × 10,105.40
  4. Step 4: Simplify right side
    13,604.60x = 206,001,610.62
  5. Step 5: Solve for x
    x = 206,001,610.62/13,604.60
  6. Step 6: Final answer
    x = 15,142.06

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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.