Home / 39,759.71-54,867.77-21,854.33

Finding the Fourth Proportional to 39,759.71, 54,867.77 and 21,854.33

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Solution

The fourth proportional to 39,759.71, 54,867.77 and 21,854.33 is: 30,158.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.71 : 54,867.77 = 21,854.33 : x
  2. Step 2: Convert to fraction form
    39,759.71/54,867.77 = 21,854.33/x
  3. Step 3: Cross multiply
    39,759.71x = 54,867.77 × 21,854.33
  4. Step 4: Simplify right side
    39,759.71x = 1,199,098,351.94
  5. Step 5: Solve for x
    x = 1,199,098,351.94/39,759.71
  6. Step 6: Final answer
    x = 30,158.63

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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.