Home / 20,285.64-27,994.41-11,212.12

Finding the Fourth Proportional to 20,285.64, 27,994.41 and 11,212.12

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Solution

The fourth proportional to 20,285.64, 27,994.41 and 11,212.12 is: 15,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.64 : 27,994.41 = 11,212.12 : x
  2. Step 2: Convert to fraction form
    20,285.64/27,994.41 = 11,212.12/x
  3. Step 3: Cross multiply
    20,285.64x = 27,994.41 × 11,212.12
  4. Step 4: Simplify right side
    20,285.64x = 313,876,719.24
  5. Step 5: Solve for x
    x = 313,876,719.24/20,285.64
  6. Step 6: Final answer
    x = 15,472.85

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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.