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Finding the Fourth Proportional to 18,515, 25,551.24 and 10,132.04

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Solution

The fourth proportional to 18,515, 25,551.24 and 10,132.04 is: 13,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515 : 25,551.24 = 10,132.04 : x
  2. Step 2: Convert to fraction form
    18,515/25,551.24 = 10,132.04/x
  3. Step 3: Cross multiply
    18,515x = 25,551.24 × 10,132.04
  4. Step 4: Simplify right side
    18,515x = 258,886,185.73
  5. Step 5: Solve for x
    x = 258,886,185.73/18,515
  6. Step 6: Final answer
    x = 13,982.51

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1.5x scale

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.