Home / 20,366.57-28,067.82-15,883.22

Finding the Fourth Proportional to 20,366.57, 28,067.82 and 15,883.22

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Solution

The fourth proportional to 20,366.57, 28,067.82 and 15,883.22 is: 21,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.57 : 28,067.82 = 15,883.22 : x
  2. Step 2: Convert to fraction form
    20,366.57/28,067.82 = 15,883.22/x
  3. Step 3: Cross multiply
    20,366.57x = 28,067.82 × 15,883.22
  4. Step 4: Simplify right side
    20,366.57x = 445,807,370.59
  5. Step 5: Solve for x
    x = 445,807,370.59/20,366.57
  6. Step 6: Final answer
    x = 21,889.17

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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.