Home / 31,930.68-44,040.94-21,156.06

Finding the Fourth Proportional to 31,930.68, 44,040.94 and 21,156.06

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Solution

The fourth proportional to 31,930.68, 44,040.94 and 21,156.06 is: 29,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,930.68 : 44,040.94 = 21,156.06 : x
  2. Step 2: Convert to fraction form
    31,930.68/44,040.94 = 21,156.06/x
  3. Step 3: Cross multiply
    31,930.68x = 44,040.94 × 21,156.06
  4. Step 4: Simplify right side
    31,930.68x = 931,732,716.21
  5. Step 5: Solve for x
    x = 931,732,716.21/31,930.68
  6. Step 6: Final answer
    x = 29,179.86

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1.5x scale

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.