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Finding the Fourth Proportional to 15,551.70, 23,327.55 and 8,158.43

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Solution

The fourth proportional to 15,551.70, 23,327.55 and 8,158.43 is: 12,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.70 : 23,327.55 = 8,158.43 : x
  2. Step 2: Convert to fraction form
    15,551.70/23,327.55 = 8,158.43/x
  3. Step 3: Cross multiply
    15,551.70x = 23,327.55 × 8,158.43
  4. Step 4: Simplify right side
    15,551.70x = 190,316,067.11
  5. Step 5: Solve for x
    x = 190,316,067.11/15,551.70
  6. Step 6: Final answer
    x = 12,237.64

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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.