Home / 13,744.78-20,619.19-4,977.64

Finding the Fourth Proportional to 13,744.78, 20,619.19 and 4,977.64

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Solution

The fourth proportional to 13,744.78, 20,619.19 and 4,977.64 is: 7,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,744.78 : 20,619.19 = 4,977.64 : x
  2. Step 2: Convert to fraction form
    13,744.78/20,619.19 = 4,977.64/x
  3. Step 3: Cross multiply
    13,744.78x = 20,619.19 × 4,977.64
  4. Step 4: Simplify right side
    13,744.78x = 102,634,936.91
  5. Step 5: Solve for x
    x = 102,634,936.91/13,744.78
  6. Step 6: Final answer
    x = 7,467.20

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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.