Home / 21,351.28-29,465.06-11,791.81

Finding the Fourth Proportional to 21,351.28, 29,465.06 and 11,791.81

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Solution

The fourth proportional to 21,351.28, 29,465.06 and 11,791.81 is: 16,272.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.28 : 29,465.06 = 11,791.81 : x
  2. Step 2: Convert to fraction form
    21,351.28/29,465.06 = 11,791.81/x
  3. Step 3: Cross multiply
    21,351.28x = 29,465.06 × 11,791.81
  4. Step 4: Simplify right side
    21,351.28x = 347,446,462.82
  5. Step 5: Solve for x
    x = 347,446,462.82/21,351.28
  6. Step 6: Final answer
    x = 16,272.86

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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.