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Finding the Fourth Proportional to 18,807.05, 28,212 and 6,327.11

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Solution

The fourth proportional to 18,807.05, 28,212 and 6,327.11 is: 9,491.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.05 : 28,212 = 6,327.11 : x
  2. Step 2: Convert to fraction form
    18,807.05/28,212 = 6,327.11/x
  3. Step 3: Cross multiply
    18,807.05x = 28,212 × 6,327.11
  4. Step 4: Simplify right side
    18,807.05x = 178,500,427.32
  5. Step 5: Solve for x
    x = 178,500,427.32/18,807.05
  6. Step 6: Final answer
    x = 9,491.14

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Why These Related Problems?

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