Home / 14,778.78-20,388.28-9,736.53

Finding the Fourth Proportional to 14,778.78, 20,388.28 and 9,736.53

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Solution

The fourth proportional to 14,778.78, 20,388.28 and 9,736.53 is: 13,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.78 : 20,388.28 = 9,736.53 : x
  2. Step 2: Convert to fraction form
    14,778.78/20,388.28 = 9,736.53/x
  3. Step 3: Cross multiply
    14,778.78x = 20,388.28 × 9,736.53
  4. Step 4: Simplify right side
    14,778.78x = 198,511,099.87
  5. Step 5: Solve for x
    x = 198,511,099.87/14,778.78
  6. Step 6: Final answer
    x = 13,432.17

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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.