Home / 20,164.78-27,827.43-11,212.19

Finding the Fourth Proportional to 20,164.78, 27,827.43 and 11,212.19

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Solution

The fourth proportional to 20,164.78, 27,827.43 and 11,212.19 is: 15,472.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.78 : 27,827.43 = 11,212.19 : x
  2. Step 2: Convert to fraction form
    20,164.78/27,827.43 = 11,212.19/x
  3. Step 3: Cross multiply
    20,164.78x = 27,827.43 × 11,212.19
  4. Step 4: Simplify right side
    20,164.78x = 312,006,376.31
  5. Step 5: Solve for x
    x = 312,006,376.31/20,164.78
  6. Step 6: Final answer
    x = 15,472.84

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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.