Home / 39,912.29-59,886.13-21,187.82

Finding the Fourth Proportional to 39,912.29, 59,886.13 and 21,187.82

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Solution

The fourth proportional to 39,912.29, 59,886.13 and 21,187.82 is: 31,791.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912.29 : 59,886.13 = 21,187.82 : x
  2. Step 2: Convert to fraction form
    39,912.29/59,886.13 = 21,187.82/x
  3. Step 3: Cross multiply
    39,912.29x = 59,886.13 × 21,187.82
  4. Step 4: Simplify right side
    39,912.29x = 1,268,856,176.40
  5. Step 5: Solve for x
    x = 1,268,856,176.40/39,912.29
  6. Step 6: Final answer
    x = 31,791.11

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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.