Home / 19,791.03-27,309.20-15,768.12

Finding the Fourth Proportional to 19,791.03, 27,309.20 and 15,768.12

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Solution

The fourth proportional to 19,791.03, 27,309.20 and 15,768.12 is: 21,758.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.03 : 27,309.20 = 15,768.12 : x
  2. Step 2: Convert to fraction form
    19,791.03/27,309.20 = 15,768.12/x
  3. Step 3: Cross multiply
    19,791.03x = 27,309.20 × 15,768.12
  4. Step 4: Simplify right side
    19,791.03x = 430,614,782.12
  5. Step 5: Solve for x
    x = 430,614,782.12/19,791.03
  6. Step 6: Final answer
    x = 21,758.08

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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.