Home / 20,137.77-27,791.05-11,185.31

Finding the Fourth Proportional to 20,137.77, 27,791.05 and 11,185.31

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Solution

The fourth proportional to 20,137.77, 27,791.05 and 11,185.31 is: 15,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.77 : 27,791.05 = 11,185.31 : x
  2. Step 2: Convert to fraction form
    20,137.77/27,791.05 = 11,185.31/x
  3. Step 3: Cross multiply
    20,137.77x = 27,791.05 × 11,185.31
  4. Step 4: Simplify right side
    20,137.77x = 310,851,509.48
  5. Step 5: Solve for x
    x = 310,851,509.48/20,137.77
  6. Step 6: Final answer
    x = 15,436.24

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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.