Home / 10,115.85-15,180.62-3,542.10

Finding the Fourth Proportional to 10,115.85, 15,180.62 and 3,542.10

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Solution

The fourth proportional to 10,115.85, 15,180.62 and 3,542.10 is: 5,315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.85 : 15,180.62 = 3,542.10 : x
  2. Step 2: Convert to fraction form
    10,115.85/15,180.62 = 3,542.10/x
  3. Step 3: Cross multiply
    10,115.85x = 15,180.62 × 3,542.10
  4. Step 4: Simplify right side
    10,115.85x = 53,771,256.39
  5. Step 5: Solve for x
    x = 53,771,256.39/10,115.85
  6. Step 6: Final answer
    x = 5,315.55

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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.