Home / 15,108.24-20,850.78-9,141.38

Finding the Fourth Proportional to 15,108.24, 20,850.78 and 9,141.38

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Solution

The fourth proportional to 15,108.24, 20,850.78 and 9,141.38 is: 12,615.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.24 : 20,850.78 = 9,141.38 : x
  2. Step 2: Convert to fraction form
    15,108.24/20,850.78 = 9,141.38/x
  3. Step 3: Cross multiply
    15,108.24x = 20,850.78 × 9,141.38
  4. Step 4: Simplify right side
    15,108.24x = 190,604,903.28
  5. Step 5: Solve for x
    x = 190,604,903.28/15,108.24
  6. Step 6: Final answer
    x = 12,615.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.