Home / 13,945.20-20,874.60-8,084.40

Finding the Fourth Proportional to 13,945.20, 20,874.60 and 8,084.40

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Solution

The fourth proportional to 13,945.20, 20,874.60 and 8,084.40 is: 12,101.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.20 : 20,874.60 = 8,084.40 : x
  2. Step 2: Convert to fraction form
    13,945.20/20,874.60 = 8,084.40/x
  3. Step 3: Cross multiply
    13,945.20x = 20,874.60 × 8,084.40
  4. Step 4: Simplify right side
    13,945.20x = 168,758,616.24
  5. Step 5: Solve for x
    x = 168,758,616.24/13,945.20
  6. Step 6: Final answer
    x = 12,101.56

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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.