Home / 39,808.36-54,936.86-21,904.68

Finding the Fourth Proportional to 39,808.36, 54,936.86 and 21,904.68

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Solution

The fourth proportional to 39,808.36, 54,936.86 and 21,904.68 is: 30,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.36 : 54,936.86 = 21,904.68 : x
  2. Step 2: Convert to fraction form
    39,808.36/54,936.86 = 21,904.68/x
  3. Step 3: Cross multiply
    39,808.36x = 54,936.86 × 21,904.68
  4. Step 4: Simplify right side
    39,808.36x = 1,203,374,338.50
  5. Step 5: Solve for x
    x = 1,203,374,338.50/39,808.36
  6. Step 6: Final answer
    x = 30,229.19

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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.