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Finding the Fourth Proportional to 10,362.80, 15,544.20 and 5,697.20

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Solution

The fourth proportional to 10,362.80, 15,544.20 and 5,697.20 is: 8,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,362.80 : 15,544.20 = 5,697.20 : x
  2. Step 2: Convert to fraction form
    10,362.80/15,544.20 = 5,697.20/x
  3. Step 3: Cross multiply
    10,362.80x = 15,544.20 × 5,697.20
  4. Step 4: Simplify right side
    10,362.80x = 88,558,416.24
  5. Step 5: Solve for x
    x = 88,558,416.24/10,362.80
  6. Step 6: Final answer
    x = 8,545.80

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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.