Home / 39,823.80-54,959.34-21,920.36

Finding the Fourth Proportional to 39,823.80, 54,959.34 and 21,920.36

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Solution

The fourth proportional to 39,823.80, 54,959.34 and 21,920.36 is: 30,251.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,823.80 : 54,959.34 = 21,920.36 : x
  2. Step 2: Convert to fraction form
    39,823.80/54,959.34 = 21,920.36/x
  3. Step 3: Cross multiply
    39,823.80x = 54,959.34 × 21,920.36
  4. Step 4: Simplify right side
    39,823.80x = 1,204,728,518.16
  5. Step 5: Solve for x
    x = 1,204,728,518.16/39,823.80
  6. Step 6: Final answer
    x = 30,251.47

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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.