Home / 13,161.38-19,744.68-4,278.96

Finding the Fourth Proportional to 13,161.38, 19,744.68 and 4,278.96

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Solution

The fourth proportional to 13,161.38, 19,744.68 and 4,278.96 is: 6,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.38 : 19,744.68 = 4,278.96 : x
  2. Step 2: Convert to fraction form
    13,161.38/19,744.68 = 4,278.96/x
  3. Step 3: Cross multiply
    13,161.38x = 19,744.68 × 4,278.96
  4. Step 4: Simplify right side
    13,161.38x = 84,486,695.93
  5. Step 5: Solve for x
    x = 84,486,695.93/13,161.38
  6. Step 6: Final answer
    x = 6,419.29

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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.