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Finding the Fourth Proportional to 15,168, 22,751.28 and 5,309.48

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Solution

The fourth proportional to 15,168, 22,751.28 and 5,309.48 is: 7,963.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168 : 22,751.28 = 5,309.48 : x
  2. Step 2: Convert to fraction form
    15,168/22,751.28 = 5,309.48/x
  3. Step 3: Cross multiply
    15,168x = 22,751.28 × 5,309.48
  4. Step 4: Simplify right side
    15,168x = 120,797,466.13
  5. Step 5: Solve for x
    x = 120,797,466.13/15,168
  6. Step 6: Final answer
    x = 7,963.97

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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.