Home / 12,228.12-18,338.38-5,208.04

Finding the Fourth Proportional to 12,228.12, 18,338.38 and 5,208.04

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Solution

The fourth proportional to 12,228.12, 18,338.38 and 5,208.04 is: 7,810.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.12 : 18,338.38 = 5,208.04 : x
  2. Step 2: Convert to fraction form
    12,228.12/18,338.38 = 5,208.04/x
  3. Step 3: Cross multiply
    12,228.12x = 18,338.38 × 5,208.04
  4. Step 4: Simplify right side
    12,228.12x = 95,507,016.58
  5. Step 5: Solve for x
    x = 95,507,016.58/12,228.12
  6. Step 6: Final answer
    x = 7,810.44

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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.