Home / 21,991.22-33,000.33-18,338.66

Finding the Fourth Proportional to 21,991.22, 33,000.33 and 18,338.66

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Solution

The fourth proportional to 21,991.22, 33,000.33 and 18,338.66 is: 27,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.22 : 33,000.33 = 18,338.66 : x
  2. Step 2: Convert to fraction form
    21,991.22/33,000.33 = 18,338.66/x
  3. Step 3: Cross multiply
    21,991.22x = 33,000.33 × 18,338.66
  4. Step 4: Simplify right side
    21,991.22x = 605,181,831.76
  5. Step 5: Solve for x
    x = 605,181,831.76/21,991.22
  6. Step 6: Final answer
    x = 27,519.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.