Home / 39,815.41-54,943.89-21,908.74

Finding the Fourth Proportional to 39,815.41, 54,943.89 and 21,908.74

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Solution

The fourth proportional to 39,815.41, 54,943.89 and 21,908.74 is: 30,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.41 : 54,943.89 = 21,908.74 : x
  2. Step 2: Convert to fraction form
    39,815.41/54,943.89 = 21,908.74/x
  3. Step 3: Cross multiply
    39,815.41x = 54,943.89 × 21,908.74
  4. Step 4: Simplify right side
    39,815.41x = 1,203,751,400.60
  5. Step 5: Solve for x
    x = 1,203,751,400.60/39,815.41
  6. Step 6: Final answer
    x = 30,233.30

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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.