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Finding the Fourth Proportional to 18,386.57, 27,560.37 and 7,847.96

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Solution

The fourth proportional to 18,386.57, 27,560.37 and 7,847.96 is: 11,763.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.57 : 27,560.37 = 7,847.96 : x
  2. Step 2: Convert to fraction form
    18,386.57/27,560.37 = 7,847.96/x
  3. Step 3: Cross multiply
    18,386.57x = 27,560.37 × 7,847.96
  4. Step 4: Simplify right side
    18,386.57x = 216,292,750.25
  5. Step 5: Solve for x
    x = 216,292,750.25/18,386.57
  6. Step 6: Final answer
    x = 11,763.63

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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.