Home / 39,643.26-54,707.23-21,738.11

Finding the Fourth Proportional to 39,643.26, 54,707.23 and 21,738.11

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Solution

The fourth proportional to 39,643.26, 54,707.23 and 21,738.11 is: 29,998.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,643.26 : 54,707.23 = 21,738.11 : x
  2. Step 2: Convert to fraction form
    39,643.26/54,707.23 = 21,738.11/x
  3. Step 3: Cross multiply
    39,643.26x = 54,707.23 × 21,738.11
  4. Step 4: Simplify right side
    39,643.26x = 1,189,231,865.96
  5. Step 5: Solve for x
    x = 1,189,231,865.96/39,643.26
  6. Step 6: Final answer
    x = 29,998.34

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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.