Home / 10,159.38-15,239.75-3,919.46

Finding the Fourth Proportional to 10,159.38, 15,239.75 and 3,919.46

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Solution

The fourth proportional to 10,159.38, 15,239.75 and 3,919.46 is: 5,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,159.38 : 15,239.75 = 3,919.46 : x
  2. Step 2: Convert to fraction form
    10,159.38/15,239.75 = 3,919.46/x
  3. Step 3: Cross multiply
    10,159.38x = 15,239.75 × 3,919.46
  4. Step 4: Simplify right side
    10,159.38x = 59,731,590.54
  5. Step 5: Solve for x
    x = 59,731,590.54/10,159.38
  6. Step 6: Final answer
    x = 5,879.45

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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.