Home / 10,159.89-15,239.39-3,918.75

Finding the Fourth Proportional to 10,159.89, 15,239.39 and 3,918.75

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Solution

The fourth proportional to 10,159.89, 15,239.39 and 3,918.75 is: 5,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,159.89 : 15,239.39 = 3,918.75 : x
  2. Step 2: Convert to fraction form
    10,159.89/15,239.39 = 3,918.75/x
  3. Step 3: Cross multiply
    10,159.89x = 15,239.39 × 3,918.75
  4. Step 4: Simplify right side
    10,159.89x = 59,719,339.97
  5. Step 5: Solve for x
    x = 59,719,339.97/10,159.89
  6. Step 6: Final answer
    x = 5,877.95

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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.