Home / 39,844.54-54,985.84-21,940.20

Finding the Fourth Proportional to 39,844.54, 54,985.84 and 21,940.20

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Solution

The fourth proportional to 39,844.54, 54,985.84 and 21,940.20 is: 30,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,844.54 : 54,985.84 = 21,940.20 : x
  2. Step 2: Convert to fraction form
    39,844.54/54,985.84 = 21,940.20/x
  3. Step 3: Cross multiply
    39,844.54x = 54,985.84 × 21,940.20
  4. Step 4: Simplify right side
    39,844.54x = 1,206,400,326.77
  5. Step 5: Solve for x
    x = 1,206,400,326.77/39,844.54
  6. Step 6: Final answer
    x = 30,277.68

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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.