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Finding the Fourth Proportional to 12,260.31, 18,375.87 and 7,055.25

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Solution

The fourth proportional to 12,260.31, 18,375.87 and 7,055.25 is: 10,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.31 : 18,375.87 = 7,055.25 : x
  2. Step 2: Convert to fraction form
    12,260.31/18,375.87 = 7,055.25/x
  3. Step 3: Cross multiply
    12,260.31x = 18,375.87 × 7,055.25
  4. Step 4: Simplify right side
    12,260.31x = 129,646,356.82
  5. Step 5: Solve for x
    x = 129,646,356.82/12,260.31
  6. Step 6: Final answer
    x = 10,574.48

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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.