Home / 13,267.72-18,309.56-7,218

Finding the Fourth Proportional to 13,267.72, 18,309.56 and 7,218

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Solution

The fourth proportional to 13,267.72, 18,309.56 and 7,218 is: 9,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.72 : 18,309.56 = 7,218 : x
  2. Step 2: Convert to fraction form
    13,267.72/18,309.56 = 7,218/x
  3. Step 3: Cross multiply
    13,267.72x = 18,309.56 × 7,218
  4. Step 4: Simplify right side
    13,267.72x = 132,158,404.08
  5. Step 5: Solve for x
    x = 132,158,404.08/13,267.72
  6. Step 6: Final answer
    x = 9,960.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.