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Finding the Fourth Proportional to 18,758, 25,886.52 and 11,306.48

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Solution

The fourth proportional to 18,758, 25,886.52 and 11,306.48 is: 15,603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758 : 25,886.52 = 11,306.48 : x
  2. Step 2: Convert to fraction form
    18,758/25,886.52 = 11,306.48/x
  3. Step 3: Cross multiply
    18,758x = 25,886.52 × 11,306.48
  4. Step 4: Simplify right side
    18,758x = 292,685,420.65
  5. Step 5: Solve for x
    x = 292,685,420.65/18,758
  6. Step 6: Final answer
    x = 15,603.23

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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.