Home / 39,833.54-54,971.25-21,929.12

Finding the Fourth Proportional to 39,833.54, 54,971.25 and 21,929.12

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Solution

The fourth proportional to 39,833.54, 54,971.25 and 21,929.12 is: 30,262.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,833.54 : 54,971.25 = 21,929.12 : x
  2. Step 2: Convert to fraction form
    39,833.54/54,971.25 = 21,929.12/x
  3. Step 3: Cross multiply
    39,833.54x = 54,971.25 × 21,929.12
  4. Step 4: Simplify right side
    39,833.54x = 1,205,471,137.80
  5. Step 5: Solve for x
    x = 1,205,471,137.80/39,833.54
  6. Step 6: Final answer
    x = 30,262.72

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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.