Home / 40,109.73-55,352.07-21,960.15

Finding the Fourth Proportional to 40,109.73, 55,352.07 and 21,960.15

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Solution

The fourth proportional to 40,109.73, 55,352.07 and 21,960.15 is: 30,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,109.73 : 55,352.07 = 21,960.15 : x
  2. Step 2: Convert to fraction form
    40,109.73/55,352.07 = 21,960.15/x
  3. Step 3: Cross multiply
    40,109.73x = 55,352.07 × 21,960.15
  4. Step 4: Simplify right side
    40,109.73x = 1,215,539,552.44
  5. Step 5: Solve for x
    x = 1,215,539,552.44/40,109.73
  6. Step 6: Final answer
    x = 30,305.36

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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.