Home / 13,490.35-20,238.26-5,170.64

Finding the Fourth Proportional to 13,490.35, 20,238.26 and 5,170.64

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Solution

The fourth proportional to 13,490.35, 20,238.26 and 5,170.64 is: 7,757.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.35 : 20,238.26 = 5,170.64 : x
  2. Step 2: Convert to fraction form
    13,490.35/20,238.26 = 5,170.64/x
  3. Step 3: Cross multiply
    13,490.35x = 20,238.26 × 5,170.64
  4. Step 4: Simplify right side
    13,490.35x = 104,644,629.64
  5. Step 5: Solve for x
    x = 104,644,629.64/13,490.35
  6. Step 6: Final answer
    x = 7,757.00

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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.