Home / 10,115.26-15,163.09-3,870.47

Finding the Fourth Proportional to 10,115.26, 15,163.09 and 3,870.47

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Solution

The fourth proportional to 10,115.26, 15,163.09 and 3,870.47 is: 5,801.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.26 : 15,163.09 = 3,870.47 : x
  2. Step 2: Convert to fraction form
    10,115.26/15,163.09 = 3,870.47/x
  3. Step 3: Cross multiply
    10,115.26x = 15,163.09 × 3,870.47
  4. Step 4: Simplify right side
    10,115.26x = 58,688,284.95
  5. Step 5: Solve for x
    x = 58,688,284.95/10,115.26
  6. Step 6: Final answer
    x = 5,801.96

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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.