Home / 40,109.09-60,120.99-15,138.54

Finding the Fourth Proportional to 40,109.09, 60,120.99 and 15,138.54

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Solution

The fourth proportional to 40,109.09, 60,120.99 and 15,138.54 is: 22,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,109.09 : 60,120.99 = 15,138.54 : x
  2. Step 2: Convert to fraction form
    40,109.09/60,120.99 = 15,138.54/x
  3. Step 3: Cross multiply
    40,109.09x = 60,120.99 × 15,138.54
  4. Step 4: Simplify right side
    40,109.09x = 910,144,011.95
  5. Step 5: Solve for x
    x = 910,144,011.95/40,109.09
  6. Step 6: Final answer
    x = 22,691.72

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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.