Home / 19,729.28-27,221.93-11,769.95

Finding the Fourth Proportional to 19,729.28, 27,221.93 and 11,769.95

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Solution

The fourth proportional to 19,729.28, 27,221.93 and 11,769.95 is: 16,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,729.28 : 27,221.93 = 11,769.95 : x
  2. Step 2: Convert to fraction form
    19,729.28/27,221.93 = 11,769.95/x
  3. Step 3: Cross multiply
    19,729.28x = 27,221.93 × 11,769.95
  4. Step 4: Simplify right side
    19,729.28x = 320,400,560.04
  5. Step 5: Solve for x
    x = 320,400,560.04/19,729.28
  6. Step 6: Final answer
    x = 16,239.85

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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.