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Finding the Fourth Proportional to 18,772.08, 28,149.81 and 5,622

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Solution

The fourth proportional to 18,772.08, 28,149.81 and 5,622 is: 8,430.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.08 : 28,149.81 = 5,622 : x
  2. Step 2: Convert to fraction form
    18,772.08/28,149.81 = 5,622/x
  3. Step 3: Cross multiply
    18,772.08x = 28,149.81 × 5,622
  4. Step 4: Simplify right side
    18,772.08x = 158,258,231.82
  5. Step 5: Solve for x
    x = 158,258,231.82/18,772.08
  6. Step 6: Final answer
    x = 8,430.51

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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.