Home / 40,007.97-55,211.00-21,858.95

Finding the Fourth Proportional to 40,007.97, 55,211.00 and 21,858.95

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Solution

The fourth proportional to 40,007.97, 55,211.00 and 21,858.95 is: 30,165.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,007.97 : 55,211.00 = 21,858.95 : x
  2. Step 2: Convert to fraction form
    40,007.97/55,211.00 = 21,858.95/x
  3. Step 3: Cross multiply
    40,007.97x = 55,211.00 × 21,858.95
  4. Step 4: Simplify right side
    40,007.97x = 1,206,854,103.10
  5. Step 5: Solve for x
    x = 1,206,854,103.10/40,007.97
  6. Step 6: Final answer
    x = 30,165.34

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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.