Home / 13,520.97-20,281.15-6,120.07

Finding the Fourth Proportional to 13,520.97, 20,281.15 and 6,120.07

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Solution

The fourth proportional to 13,520.97, 20,281.15 and 6,120.07 is: 9,179.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.97 : 20,281.15 = 6,120.07 : x
  2. Step 2: Convert to fraction form
    13,520.97/20,281.15 = 6,120.07/x
  3. Step 3: Cross multiply
    13,520.97x = 20,281.15 × 6,120.07
  4. Step 4: Simplify right side
    13,520.97x = 124,122,057.68
  5. Step 5: Solve for x
    x = 124,122,057.68/13,520.97
  6. Step 6: Final answer
    x = 9,179.97

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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.