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Finding the Fourth Proportional to 13,697.48, 18,902.50 and 7,729.14

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Solution

The fourth proportional to 13,697.48, 18,902.50 and 7,729.14 is: 10,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.48 : 18,902.50 = 7,729.14 : x
  2. Step 2: Convert to fraction form
    13,697.48/18,902.50 = 7,729.14/x
  3. Step 3: Cross multiply
    13,697.48x = 18,902.50 × 7,729.14
  4. Step 4: Simplify right side
    13,697.48x = 146,100,068.85
  5. Step 5: Solve for x
    x = 146,100,068.85/13,697.48
  6. Step 6: Final answer
    x = 10,666.20

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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.