Home / 10,218.54-15,333.64-3,977.75

Finding the Fourth Proportional to 10,218.54, 15,333.64 and 3,977.75

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Solution

The fourth proportional to 10,218.54, 15,333.64 and 3,977.75 is: 5,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.54 : 15,333.64 = 3,977.75 : x
  2. Step 2: Convert to fraction form
    10,218.54/15,333.64 = 3,977.75/x
  3. Step 3: Cross multiply
    10,218.54x = 15,333.64 × 3,977.75
  4. Step 4: Simplify right side
    10,218.54x = 60,993,414.90
  5. Step 5: Solve for x
    x = 60,993,414.90/10,218.54
  6. Step 6: Final answer
    x = 5,968.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.