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Finding the Fourth Proportional to 20,627.59, 28,466.11 and 11,196.16

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Solution

The fourth proportional to 20,627.59, 28,466.11 and 11,196.16 is: 15,450.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.59 : 28,466.11 = 11,196.16 : x
  2. Step 2: Convert to fraction form
    20,627.59/28,466.11 = 11,196.16/x
  3. Step 3: Cross multiply
    20,627.59x = 28,466.11 × 11,196.16
  4. Step 4: Simplify right side
    20,627.59x = 318,711,122.14
  5. Step 5: Solve for x
    x = 318,711,122.14/20,627.59
  6. Step 6: Final answer
    x = 15,450.72

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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.