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Finding the Fourth Proportional to 25,396.91, 38,105.39 and 7,868.10

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Solution

The fourth proportional to 25,396.91, 38,105.39 and 7,868.10 is: 11,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,396.91 : 38,105.39 = 7,868.10 : x
  2. Step 2: Convert to fraction form
    25,396.91/38,105.39 = 7,868.10/x
  3. Step 3: Cross multiply
    25,396.91x = 38,105.39 × 7,868.10
  4. Step 4: Simplify right side
    25,396.91x = 299,816,979.72
  5. Step 5: Solve for x
    x = 299,816,979.72/25,396.91
  6. Step 6: Final answer
    x = 11,805.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.