Home / 10,138.26-15,207.47-2,742.78

Finding the Fourth Proportional to 10,138.26, 15,207.47 and 2,742.78

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Solution

The fourth proportional to 10,138.26, 15,207.47 and 2,742.78 is: 4,114.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.26 : 15,207.47 = 2,742.78 : x
  2. Step 2: Convert to fraction form
    10,138.26/15,207.47 = 2,742.78/x
  3. Step 3: Cross multiply
    10,138.26x = 15,207.47 × 2,742.78
  4. Step 4: Simplify right side
    10,138.26x = 41,710,744.57
  5. Step 5: Solve for x
    x = 41,710,744.57/10,138.26
  6. Step 6: Final answer
    x = 4,114.19

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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.