Home / 13,742.42-20,610.39-4,979.30

Finding the Fourth Proportional to 13,742.42, 20,610.39 and 4,979.30

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Solution

The fourth proportional to 13,742.42, 20,610.39 and 4,979.30 is: 7,467.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.42 : 20,610.39 = 4,979.30 : x
  2. Step 2: Convert to fraction form
    13,742.42/20,610.39 = 4,979.30/x
  3. Step 3: Cross multiply
    13,742.42x = 20,610.39 × 4,979.30
  4. Step 4: Simplify right side
    13,742.42x = 102,625,314.93
  5. Step 5: Solve for x
    x = 102,625,314.93/13,742.42
  6. Step 6: Final answer
    x = 7,467.78

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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.