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Finding the Fourth Proportional to 25,393.91, 38,100.88 and 7,865.10

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Solution

The fourth proportional to 25,393.91, 38,100.88 and 7,865.10 is: 11,800.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,393.91 : 38,100.88 = 7,865.10 : x
  2. Step 2: Convert to fraction form
    25,393.91/38,100.88 = 7,865.10/x
  3. Step 3: Cross multiply
    25,393.91x = 38,100.88 × 7,865.10
  4. Step 4: Simplify right side
    25,393.91x = 299,667,241.12
  5. Step 5: Solve for x
    x = 299,667,241.12/25,393.91
  6. Step 6: Final answer
    x = 11,800.75

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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.