Home / 28,581.50-39,418.11-22,602.78

Finding the Fourth Proportional to 28,581.50, 39,418.11 and 22,602.78

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Solution

The fourth proportional to 28,581.50, 39,418.11 and 22,602.78 is: 31,172.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.50 : 39,418.11 = 22,602.78 : x
  2. Step 2: Convert to fraction form
    28,581.50/39,418.11 = 22,602.78/x
  3. Step 3: Cross multiply
    28,581.50x = 39,418.11 × 22,602.78
  4. Step 4: Simplify right side
    28,581.50x = 890,958,868.35
  5. Step 5: Solve for x
    x = 890,958,868.35/28,581.50
  6. Step 6: Final answer
    x = 31,172.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.