Home / 12,228.66-18,345.36-5,208.56

Finding the Fourth Proportional to 12,228.66, 18,345.36 and 5,208.56

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Solution

The fourth proportional to 12,228.66, 18,345.36 and 5,208.56 is: 7,813.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.66 : 18,345.36 = 5,208.56 : x
  2. Step 2: Convert to fraction form
    12,228.66/18,345.36 = 5,208.56/x
  3. Step 3: Cross multiply
    12,228.66x = 18,345.36 × 5,208.56
  4. Step 4: Simplify right side
    12,228.66x = 95,552,816.55
  5. Step 5: Solve for x
    x = 95,552,816.55/12,228.66
  6. Step 6: Final answer
    x = 7,813.84

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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.