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Finding the Fourth Proportional to 18,572.40, 27,858 and 5,424.96

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Solution

The fourth proportional to 18,572.40, 27,858 and 5,424.96 is: 8,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.40 : 27,858 = 5,424.96 : x
  2. Step 2: Convert to fraction form
    18,572.40/27,858 = 5,424.96/x
  3. Step 3: Cross multiply
    18,572.40x = 27,858 × 5,424.96
  4. Step 4: Simplify right side
    18,572.40x = 151,128,535.68
  5. Step 5: Solve for x
    x = 151,128,535.68/18,572.40
  6. Step 6: Final answer
    x = 8,137.26

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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.