Home / 39,638.80-54,701.51-21,734.10

Finding the Fourth Proportional to 39,638.80, 54,701.51 and 21,734.10

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Solution

The fourth proportional to 39,638.80, 54,701.51 and 21,734.10 is: 29,993.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.80 : 54,701.51 = 21,734.10 : x
  2. Step 2: Convert to fraction form
    39,638.80/54,701.51 = 21,734.10/x
  3. Step 3: Cross multiply
    39,638.80x = 54,701.51 × 21,734.10
  4. Step 4: Simplify right side
    39,638.80x = 1,188,887,979.82
  5. Step 5: Solve for x
    x = 1,188,887,979.82/39,638.80
  6. Step 6: Final answer
    x = 29,993.04

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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.