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Finding the Fourth Proportional to 13,560.72, 18,712.72 and 7,591

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Solution

The fourth proportional to 13,560.72, 18,712.72 and 7,591 is: 10,474.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.72 : 18,712.72 = 7,591 : x
  2. Step 2: Convert to fraction form
    13,560.72/18,712.72 = 7,591/x
  3. Step 3: Cross multiply
    13,560.72x = 18,712.72 × 7,591
  4. Step 4: Simplify right side
    13,560.72x = 142,048,257.52
  5. Step 5: Solve for x
    x = 142,048,257.52/13,560.72
  6. Step 6: Final answer
    x = 10,474.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.