Home / 39,144.75-54,018.18-21,239.07

Finding the Fourth Proportional to 39,144.75, 54,018.18 and 21,239.07

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Solution

The fourth proportional to 39,144.75, 54,018.18 and 21,239.07 is: 29,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,144.75 : 54,018.18 = 21,239.07 : x
  2. Step 2: Convert to fraction form
    39,144.75/54,018.18 = 21,239.07/x
  3. Step 3: Cross multiply
    39,144.75x = 54,018.18 × 21,239.07
  4. Step 4: Simplify right side
    39,144.75x = 1,147,295,906.29
  5. Step 5: Solve for x
    x = 1,147,295,906.29/39,144.75
  6. Step 6: Final answer
    x = 29,309.06

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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.