Home / 31,912.78-44,010.96-19,977.20

Finding the Fourth Proportional to 31,912.78, 44,010.96 and 19,977.20

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Solution

The fourth proportional to 31,912.78, 44,010.96 and 19,977.20 is: 27,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,912.78 : 44,010.96 = 19,977.20 : x
  2. Step 2: Convert to fraction form
    31,912.78/44,010.96 = 19,977.20/x
  3. Step 3: Cross multiply
    31,912.78x = 44,010.96 × 19,977.20
  4. Step 4: Simplify right side
    31,912.78x = 879,215,750.11
  5. Step 5: Solve for x
    x = 879,215,750.11/31,912.78
  6. Step 6: Final answer
    x = 27,550.59

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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.