Home / 20,116.25-27,760.45-11,163.77

Finding the Fourth Proportional to 20,116.25, 27,760.45 and 11,163.77

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Solution

The fourth proportional to 20,116.25, 27,760.45 and 11,163.77 is: 15,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.25 : 27,760.45 = 11,163.77 : x
  2. Step 2: Convert to fraction form
    20,116.25/27,760.45 = 11,163.77/x
  3. Step 3: Cross multiply
    20,116.25x = 27,760.45 × 11,163.77
  4. Step 4: Simplify right side
    20,116.25x = 309,911,112.18
  5. Step 5: Solve for x
    x = 309,911,112.18/20,116.25
  6. Step 6: Final answer
    x = 15,406.01

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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.