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Finding the Fourth Proportional to 18,530.29, 25,570.18 and 10,975.29

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Solution

The fourth proportional to 18,530.29, 25,570.18 and 10,975.29 is: 15,144.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.29 : 25,570.18 = 10,975.29 : x
  2. Step 2: Convert to fraction form
    18,530.29/25,570.18 = 10,975.29/x
  3. Step 3: Cross multiply
    18,530.29x = 25,570.18 × 10,975.29
  4. Step 4: Simplify right side
    18,530.29x = 280,640,140.85
  5. Step 5: Solve for x
    x = 280,640,140.85/18,530.29
  6. Step 6: Final answer
    x = 15,144.94

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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.