Home / 39,859.59-55,005.65-21,954.61

Finding the Fourth Proportional to 39,859.59, 55,005.65 and 21,954.61

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Solution

The fourth proportional to 39,859.59, 55,005.65 and 21,954.61 is: 30,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.59 : 55,005.65 = 21,954.61 : x
  2. Step 2: Convert to fraction form
    39,859.59/55,005.65 = 21,954.61/x
  3. Step 3: Cross multiply
    39,859.59x = 55,005.65 × 21,954.61
  4. Step 4: Simplify right side
    39,859.59x = 1,207,627,634.86
  5. Step 5: Solve for x
    x = 1,207,627,634.86/39,859.59
  6. Step 6: Final answer
    x = 30,297.04

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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.