Home / 20,165.92-27,828.64-11,212.32

Finding the Fourth Proportional to 20,165.92, 27,828.64 and 11,212.32

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Solution

The fourth proportional to 20,165.92, 27,828.64 and 11,212.32 is: 15,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.92 : 27,828.64 = 11,212.32 : x
  2. Step 2: Convert to fraction form
    20,165.92/27,828.64 = 11,212.32/x
  3. Step 3: Cross multiply
    20,165.92x = 27,828.64 × 11,212.32
  4. Step 4: Simplify right side
    20,165.92x = 312,023,616.84
  5. Step 5: Solve for x
    x = 312,023,616.84/20,165.92
  6. Step 6: Final answer
    x = 15,472.82

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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.