Home / 31,754.05-47,640.33-14,219.78

Finding the Fourth Proportional to 31,754.05, 47,640.33 and 14,219.78

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Solution

The fourth proportional to 31,754.05, 47,640.33 and 14,219.78 is: 21,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,754.05 : 47,640.33 = 14,219.78 : x
  2. Step 2: Convert to fraction form
    31,754.05/47,640.33 = 14,219.78/x
  3. Step 3: Cross multiply
    31,754.05x = 47,640.33 × 14,219.78
  4. Step 4: Simplify right side
    31,754.05x = 677,434,773.53
  5. Step 5: Solve for x
    x = 677,434,773.53/31,754.05
  6. Step 6: Final answer
    x = 21,333.81

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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.