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Finding the Fourth Proportional to 13,234.78, 18,263.89 and 7,184.87

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Solution

The fourth proportional to 13,234.78, 18,263.89 and 7,184.87 is: 9,915.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,234.78 : 18,263.89 = 7,184.87 : x
  2. Step 2: Convert to fraction form
    13,234.78/18,263.89 = 7,184.87/x
  3. Step 3: Cross multiply
    13,234.78x = 18,263.89 × 7,184.87
  4. Step 4: Simplify right side
    13,234.78x = 131,223,675.34
  5. Step 5: Solve for x
    x = 131,223,675.34/13,234.78
  6. Step 6: Final answer
    x = 9,915.06

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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.