Home / 25,013.09-34,516.78-13,680.38

Finding the Fourth Proportional to 25,013.09, 34,516.78 and 13,680.38

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Solution

The fourth proportional to 25,013.09, 34,516.78 and 13,680.38 is: 18,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,013.09 : 34,516.78 = 13,680.38 : x
  2. Step 2: Convert to fraction form
    25,013.09/34,516.78 = 13,680.38/x
  3. Step 3: Cross multiply
    25,013.09x = 34,516.78 × 13,680.38
  4. Step 4: Simplify right side
    25,013.09x = 472,202,718.87
  5. Step 5: Solve for x
    x = 472,202,718.87/25,013.09
  6. Step 6: Final answer
    x = 18,878.22

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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.