Home / 40,760.20-61,149.10-12,679.72

Finding the Fourth Proportional to 40,760.20, 61,149.10 and 12,679.72

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Solution

The fourth proportional to 40,760.20, 61,149.10 and 12,679.72 is: 19,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,760.20 : 61,149.10 = 12,679.72 : x
  2. Step 2: Convert to fraction form
    40,760.20/61,149.10 = 12,679.72/x
  3. Step 3: Cross multiply
    40,760.20x = 61,149.10 × 12,679.72
  4. Step 4: Simplify right side
    40,760.20x = 775,353,466.25
  5. Step 5: Solve for x
    x = 775,353,466.25/40,760.20
  6. Step 6: Final answer
    x = 19,022.32

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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.