Home / 18,618.96-25,694.31-10,121.25

Finding the Fourth Proportional to 18,618.96, 25,694.31 and 10,121.25

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Solution

The fourth proportional to 18,618.96, 25,694.31 and 10,121.25 is: 13,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.96 : 25,694.31 = 10,121.25 : x
  2. Step 2: Convert to fraction form
    18,618.96/25,694.31 = 10,121.25/x
  3. Step 3: Cross multiply
    18,618.96x = 25,694.31 × 10,121.25
  4. Step 4: Simplify right side
    18,618.96x = 260,058,669.40
  5. Step 5: Solve for x
    x = 260,058,669.40/18,618.96
  6. Step 6: Final answer
    x = 13,967.41

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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.