Home / 13,766.11-18,997.32-7,478.53

Finding the Fourth Proportional to 13,766.11, 18,997.32 and 7,478.53

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Solution

The fourth proportional to 13,766.11, 18,997.32 and 7,478.53 is: 10,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.11 : 18,997.32 = 7,478.53 : x
  2. Step 2: Convert to fraction form
    13,766.11/18,997.32 = 7,478.53/x
  3. Step 3: Cross multiply
    13,766.11x = 18,997.32 × 7,478.53
  4. Step 4: Simplify right side
    13,766.11x = 142,072,027.54
  5. Step 5: Solve for x
    x = 142,072,027.54/13,766.11
  6. Step 6: Final answer
    x = 10,320.42

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Why These Related Problems?

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