Home / 20,273.11-27,976.62-11,320.77

Finding the Fourth Proportional to 20,273.11, 27,976.62 and 11,320.77

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Solution

The fourth proportional to 20,273.11, 27,976.62 and 11,320.77 is: 15,622.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.11 : 27,976.62 = 11,320.77 : x
  2. Step 2: Convert to fraction form
    20,273.11/27,976.62 = 11,320.77/x
  3. Step 3: Cross multiply
    20,273.11x = 27,976.62 × 11,320.77
  4. Step 4: Simplify right side
    20,273.11x = 316,716,880.40
  5. Step 5: Solve for x
    x = 316,716,880.40/20,273.11
  6. Step 6: Final answer
    x = 15,622.51

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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.