Home / 10,119.20-15,178.80-2,723.47

Finding the Fourth Proportional to 10,119.20, 15,178.80 and 2,723.47

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Solution

The fourth proportional to 10,119.20, 15,178.80 and 2,723.47 is: 4,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.20 : 15,178.80 = 2,723.47 : x
  2. Step 2: Convert to fraction form
    10,119.20/15,178.80 = 2,723.47/x
  3. Step 3: Cross multiply
    10,119.20x = 15,178.80 × 2,723.47
  4. Step 4: Simplify right side
    10,119.20x = 41,338,958.93
  5. Step 5: Solve for x
    x = 41,338,958.93/10,119.20
  6. Step 6: Final answer
    x = 4,085.20

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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.