Home / 19,791.20-27,311.80-10,839.26

Finding the Fourth Proportional to 19,791.20, 27,311.80 and 10,839.26

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Solution

The fourth proportional to 19,791.20, 27,311.80 and 10,839.26 is: 14,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.20 : 27,311.80 = 10,839.26 : x
  2. Step 2: Convert to fraction form
    19,791.20/27,311.80 = 10,839.26/x
  3. Step 3: Cross multiply
    19,791.20x = 27,311.80 × 10,839.26
  4. Step 4: Simplify right side
    19,791.20x = 296,039,701.27
  5. Step 5: Solve for x
    x = 296,039,701.27/19,791.20
  6. Step 6: Final answer
    x = 14,958.15

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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.