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Finding the Fourth Proportional to 18,775.72, 28,195.78 and 16,672.10

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Solution

The fourth proportional to 18,775.72, 28,195.78 and 16,672.10 is: 25,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.72 : 28,195.78 = 16,672.10 : x
  2. Step 2: Convert to fraction form
    18,775.72/28,195.78 = 16,672.10/x
  3. Step 3: Cross multiply
    18,775.72x = 28,195.78 × 16,672.10
  4. Step 4: Simplify right side
    18,775.72x = 470,082,863.74
  5. Step 5: Solve for x
    x = 470,082,863.74/18,775.72
  6. Step 6: Final answer
    x = 25,036.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.