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Finding the Fourth Proportional to 20,196.42, 27,870.51 and 11,243.92

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Solution

The fourth proportional to 20,196.42, 27,870.51 and 11,243.92 is: 15,516.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.42 : 27,870.51 = 11,243.92 : x
  2. Step 2: Convert to fraction form
    20,196.42/27,870.51 = 11,243.92/x
  3. Step 3: Cross multiply
    20,196.42x = 27,870.51 × 11,243.92
  4. Step 4: Simplify right side
    20,196.42x = 313,373,746.30
  5. Step 5: Solve for x
    x = 313,373,746.30/20,196.42
  6. Step 6: Final answer
    x = 15,516.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.