Home / 15,139.54-22,709.13-5,278.79

Finding the Fourth Proportional to 15,139.54, 22,709.13 and 5,278.79

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Solution

The fourth proportional to 15,139.54, 22,709.13 and 5,278.79 is: 7,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.54 : 22,709.13 = 5,278.79 : x
  2. Step 2: Convert to fraction form
    15,139.54/22,709.13 = 5,278.79/x
  3. Step 3: Cross multiply
    15,139.54x = 22,709.13 × 5,278.79
  4. Step 4: Simplify right side
    15,139.54x = 119,876,728.35
  5. Step 5: Solve for x
    x = 119,876,728.35/15,139.54
  6. Step 6: Final answer
    x = 7,918.12

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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.