Home / 39,138.22-54,010.76-21,233.22

Finding the Fourth Proportional to 39,138.22, 54,010.76 and 21,233.22

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Solution

The fourth proportional to 39,138.22, 54,010.76 and 21,233.22 is: 29,301.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.22 : 54,010.76 = 21,233.22 : x
  2. Step 2: Convert to fraction form
    39,138.22/54,010.76 = 21,233.22/x
  3. Step 3: Cross multiply
    39,138.22x = 54,010.76 × 21,233.22
  4. Step 4: Simplify right side
    39,138.22x = 1,146,821,973.23
  5. Step 5: Solve for x
    x = 1,146,821,973.23/39,138.22
  6. Step 6: Final answer
    x = 29,301.85

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1.5x scale

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.