Home / 13,840.32-20,760.56-3,452.07

Finding the Fourth Proportional to 13,840.32, 20,760.56 and 3,452.07

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Solution

The fourth proportional to 13,840.32, 20,760.56 and 3,452.07 is: 5,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.32 : 20,760.56 = 3,452.07 : x
  2. Step 2: Convert to fraction form
    13,840.32/20,760.56 = 3,452.07/x
  3. Step 3: Cross multiply
    13,840.32x = 20,760.56 × 3,452.07
  4. Step 4: Simplify right side
    13,840.32x = 71,666,906.36
  5. Step 5: Solve for x
    x = 71,666,906.36/13,840.32
  6. Step 6: Final answer
    x = 5,178.12

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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.