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Finding the Fourth Proportional to 25,391.98, 38,097.99 and 18,380.82

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Solution

The fourth proportional to 25,391.98, 38,097.99 and 18,380.82 is: 27,578.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,391.98 : 38,097.99 = 18,380.82 : x
  2. Step 2: Convert to fraction form
    25,391.98/38,097.99 = 18,380.82/x
  3. Step 3: Cross multiply
    25,391.98x = 38,097.99 × 18,380.82
  4. Step 4: Simplify right side
    25,391.98x = 700,272,106.06
  5. Step 5: Solve for x
    x = 700,272,106.06/25,391.98
  6. Step 6: Final answer
    x = 27,578.48

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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.