Home / 20,737.49-31,112.51-7,408.73

Finding the Fourth Proportional to 20,737.49, 31,112.51 and 7,408.73

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Solution

The fourth proportional to 20,737.49, 31,112.51 and 7,408.73 is: 11,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.49 : 31,112.51 = 7,408.73 : x
  2. Step 2: Convert to fraction form
    20,737.49/31,112.51 = 7,408.73/x
  3. Step 3: Cross multiply
    20,737.49x = 31,112.51 × 7,408.73
  4. Step 4: Simplify right side
    20,737.49x = 230,504,226.95
  5. Step 5: Solve for x
    x = 230,504,226.95/20,737.49
  6. Step 6: Final answer
    x = 11,115.34

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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.