Home / 20,267.31-30,399.81-5,475.11

Finding the Fourth Proportional to 20,267.31, 30,399.81 and 5,475.11

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Solution

The fourth proportional to 20,267.31, 30,399.81 and 5,475.11 is: 8,212.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.31 : 30,399.81 = 5,475.11 : x
  2. Step 2: Convert to fraction form
    20,267.31/30,399.81 = 5,475.11/x
  3. Step 3: Cross multiply
    20,267.31x = 30,399.81 × 5,475.11
  4. Step 4: Simplify right side
    20,267.31x = 166,442,303.73
  5. Step 5: Solve for x
    x = 166,442,303.73/20,267.31
  6. Step 6: Final answer
    x = 8,212.35

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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.