Home / 10,155.97-15,231.26-2,758.70

Finding the Fourth Proportional to 10,155.97, 15,231.26 and 2,758.70

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Solution

The fourth proportional to 10,155.97, 15,231.26 and 2,758.70 is: 4,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.97 : 15,231.26 = 2,758.70 : x
  2. Step 2: Convert to fraction form
    10,155.97/15,231.26 = 2,758.70/x
  3. Step 3: Cross multiply
    10,155.97x = 15,231.26 × 2,758.70
  4. Step 4: Simplify right side
    10,155.97x = 42,018,405.14
  5. Step 5: Solve for x
    x = 42,018,405.14/10,155.97
  6. Step 6: Final answer
    x = 4,137.31

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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.