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Finding the Fourth Proportional to 25,999.80, 39,000.78 and 21,647.94

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Solution

The fourth proportional to 25,999.80, 39,000.78 and 21,647.94 is: 32,472.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,999.80 : 39,000.78 = 21,647.94 : x
  2. Step 2: Convert to fraction form
    25,999.80/39,000.78 = 21,647.94/x
  3. Step 3: Cross multiply
    25,999.80x = 39,000.78 × 21,647.94
  4. Step 4: Simplify right side
    25,999.80x = 844,286,545.39
  5. Step 5: Solve for x
    x = 844,286,545.39/25,999.80
  6. Step 6: Final answer
    x = 32,472.81

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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.