Home / 39,860.72-55,010.29-21,955.73

Finding the Fourth Proportional to 39,860.72, 55,010.29 and 21,955.73

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Solution

The fourth proportional to 39,860.72, 55,010.29 and 21,955.73 is: 30,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.72 : 55,010.29 = 21,955.73 : x
  2. Step 2: Convert to fraction form
    39,860.72/55,010.29 = 21,955.73/x
  3. Step 3: Cross multiply
    39,860.72x = 55,010.29 × 21,955.73
  4. Step 4: Simplify right side
    39,860.72x = 1,207,790,744.52
  5. Step 5: Solve for x
    x = 1,207,790,744.52/39,860.72
  6. Step 6: Final answer
    x = 30,300.27

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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.