Home / 39,109.33-53,971.13-21,204.61

Finding the Fourth Proportional to 39,109.33, 53,971.13 and 21,204.61

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Solution

The fourth proportional to 39,109.33, 53,971.13 and 21,204.61 is: 29,262.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109.33 : 53,971.13 = 21,204.61 : x
  2. Step 2: Convert to fraction form
    39,109.33/53,971.13 = 21,204.61/x
  3. Step 3: Cross multiply
    39,109.33x = 53,971.13 × 21,204.61
  4. Step 4: Simplify right side
    39,109.33x = 1,144,436,387.03
  5. Step 5: Solve for x
    x = 1,144,436,387.03/39,109.33
  6. Step 6: Final answer
    x = 29,262.49

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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.