Home / 13,935.56-20,903.36-3,405.56

Finding the Fourth Proportional to 13,935.56, 20,903.36 and 3,405.56

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Solution

The fourth proportional to 13,935.56, 20,903.36 and 3,405.56 is: 5,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.56 : 20,903.36 = 3,405.56 : x
  2. Step 2: Convert to fraction form
    13,935.56/20,903.36 = 3,405.56/x
  3. Step 3: Cross multiply
    13,935.56x = 20,903.36 × 3,405.56
  4. Step 4: Simplify right side
    13,935.56x = 71,187,525.14
  5. Step 5: Solve for x
    x = 71,187,525.14/13,935.56
  6. Step 6: Final answer
    x = 5,108.34

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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.