Home / 39,639.77-54,703.31-21,734.38

Finding the Fourth Proportional to 39,639.77, 54,703.31 and 21,734.38

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Solution

The fourth proportional to 39,639.77, 54,703.31 and 21,734.38 is: 29,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.77 : 54,703.31 = 21,734.38 : x
  2. Step 2: Convert to fraction form
    39,639.77/54,703.31 = 21,734.38/x
  3. Step 3: Cross multiply
    39,639.77x = 54,703.31 × 21,734.38
  4. Step 4: Simplify right side
    39,639.77x = 1,188,942,526.80
  5. Step 5: Solve for x
    x = 1,188,942,526.80/39,639.77
  6. Step 6: Final answer
    x = 29,993.68

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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.