Home / 39,639.30-54,701.85-21,734.27

Finding the Fourth Proportional to 39,639.30, 54,701.85 and 21,734.27

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Solution

The fourth proportional to 39,639.30, 54,701.85 and 21,734.27 is: 29,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.30 : 54,701.85 = 21,734.27 : x
  2. Step 2: Convert to fraction form
    39,639.30/54,701.85 = 21,734.27/x
  3. Step 3: Cross multiply
    39,639.30x = 54,701.85 × 21,734.27
  4. Step 4: Simplify right side
    39,639.30x = 1,188,904,777.40
  5. Step 5: Solve for x
    x = 1,188,904,777.40/39,639.30
  6. Step 6: Final answer
    x = 29,993.08

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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.