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Finding the Fourth Proportional to 25,843.70, 38,768.79 and 12,684.98

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Solution

The fourth proportional to 25,843.70, 38,768.79 and 12,684.98 is: 19,029.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,843.70 : 38,768.79 = 12,684.98 : x
  2. Step 2: Convert to fraction form
    25,843.70/38,768.79 = 12,684.98/x
  3. Step 3: Cross multiply
    25,843.70x = 38,768.79 × 12,684.98
  4. Step 4: Simplify right side
    25,843.70x = 491,781,325.77
  5. Step 5: Solve for x
    x = 491,781,325.77/25,843.70
  6. Step 6: Final answer
    x = 19,029.06

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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.