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Finding the Fourth Proportional to 20,160.14, 27,822.02 and 11,207.82

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Solution

The fourth proportional to 20,160.14, 27,822.02 and 11,207.82 is: 15,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.14 : 27,822.02 = 11,207.82 : x
  2. Step 2: Convert to fraction form
    20,160.14/27,822.02 = 11,207.82/x
  3. Step 3: Cross multiply
    20,160.14x = 27,822.02 × 11,207.82
  4. Step 4: Simplify right side
    20,160.14x = 311,824,136.16
  5. Step 5: Solve for x
    x = 311,824,136.16/20,160.14
  6. Step 6: Final answer
    x = 15,467.36

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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.