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Finding the Fourth Proportional to 25,895.28, 38,855.82 and 11,855.28

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Solution

The fourth proportional to 25,895.28, 38,855.82 and 11,855.28 is: 17,788.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,895.28 : 38,855.82 = 11,855.28 : x
  2. Step 2: Convert to fraction form
    25,895.28/38,855.82 = 11,855.28/x
  3. Step 3: Cross multiply
    25,895.28x = 38,855.82 × 11,855.28
  4. Step 4: Simplify right side
    25,895.28x = 460,646,625.73
  5. Step 5: Solve for x
    x = 460,646,625.73/25,895.28
  6. Step 6: Final answer
    x = 17,788.83

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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.