Home / 31,872.74-43,982.34-19,935.50

Finding the Fourth Proportional to 31,872.74, 43,982.34 and 19,935.50

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Solution

The fourth proportional to 31,872.74, 43,982.34 and 19,935.50 is: 27,509.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,872.74 : 43,982.34 = 19,935.50 : x
  2. Step 2: Convert to fraction form
    31,872.74/43,982.34 = 19,935.50/x
  3. Step 3: Cross multiply
    31,872.74x = 43,982.34 × 19,935.50
  4. Step 4: Simplify right side
    31,872.74x = 876,809,939.07
  5. Step 5: Solve for x
    x = 876,809,939.07/31,872.74
  6. Step 6: Final answer
    x = 27,509.71

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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.