Home / 39,991.89-55,187.75-22,086.51

Finding the Fourth Proportional to 39,991.89, 55,187.75 and 22,086.51

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Solution

The fourth proportional to 39,991.89, 55,187.75 and 22,086.51 is: 30,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,991.89 : 55,187.75 = 22,086.51 : x
  2. Step 2: Convert to fraction form
    39,991.89/55,187.75 = 22,086.51/x
  3. Step 3: Cross multiply
    39,991.89x = 55,187.75 × 22,086.51
  4. Step 4: Simplify right side
    39,991.89x = 1,218,904,992.36
  5. Step 5: Solve for x
    x = 1,218,904,992.36/39,991.89
  6. Step 6: Final answer
    x = 30,478.80

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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.