Home / 12,555.67-17,327-6,890.33

Finding the Fourth Proportional to 12,555.67, 17,327 and 6,890.33

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Solution

The fourth proportional to 12,555.67, 17,327 and 6,890.33 is: 9,508.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.67 : 17,327 = 6,890.33 : x
  2. Step 2: Convert to fraction form
    12,555.67/17,327 = 6,890.33/x
  3. Step 3: Cross multiply
    12,555.67x = 17,327 × 6,890.33
  4. Step 4: Simplify right side
    12,555.67x = 119,388,747.91
  5. Step 5: Solve for x
    x = 119,388,747.91/12,555.67
  6. Step 6: Final answer
    x = 9,508.75

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1.5x scale

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.