Home / 12,781.20-19,171.80-4,016.10

Finding the Fourth Proportional to 12,781.20, 19,171.80 and 4,016.10

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Solution

The fourth proportional to 12,781.20, 19,171.80 and 4,016.10 is: 6,024.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.20 : 19,171.80 = 4,016.10 : x
  2. Step 2: Convert to fraction form
    12,781.20/19,171.80 = 4,016.10/x
  3. Step 3: Cross multiply
    12,781.20x = 19,171.80 × 4,016.10
  4. Step 4: Simplify right side
    12,781.20x = 76,995,865.98
  5. Step 5: Solve for x
    x = 76,995,865.98/12,781.20
  6. Step 6: Final answer
    x = 6,024.15

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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.