Home / 12,753.56-19,129.62-3,987.44

Finding the Fourth Proportional to 12,753.56, 19,129.62 and 3,987.44

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Solution

The fourth proportional to 12,753.56, 19,129.62 and 3,987.44 is: 5,980.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.56 : 19,129.62 = 3,987.44 : x
  2. Step 2: Convert to fraction form
    12,753.56/19,129.62 = 3,987.44/x
  3. Step 3: Cross multiply
    12,753.56x = 19,129.62 × 3,987.44
  4. Step 4: Simplify right side
    12,753.56x = 76,278,211.97
  5. Step 5: Solve for x
    x = 76,278,211.97/12,753.56
  6. Step 6: Final answer
    x = 5,980.93

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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.