Home / 20,165.43-27,828.31-11,212.92

Finding the Fourth Proportional to 20,165.43, 27,828.31 and 11,212.92

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Solution

The fourth proportional to 20,165.43, 27,828.31 and 11,212.92 is: 15,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.43 : 27,828.31 = 11,212.92 : x
  2. Step 2: Convert to fraction form
    20,165.43/27,828.31 = 11,212.92/x
  3. Step 3: Cross multiply
    20,165.43x = 27,828.31 × 11,212.92
  4. Step 4: Simplify right side
    20,165.43x = 312,036,613.77
  5. Step 5: Solve for x
    x = 312,036,613.77/20,165.43
  6. Step 6: Final answer
    x = 15,473.84

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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.