Home / 12,239.13-16,889.38-6,860.91

Finding the Fourth Proportional to 12,239.13, 16,889.38 and 6,860.91

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Solution

The fourth proportional to 12,239.13, 16,889.38 and 6,860.91 is: 9,467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.13 : 16,889.38 = 6,860.91 : x
  2. Step 2: Convert to fraction form
    12,239.13/16,889.38 = 6,860.91/x
  3. Step 3: Cross multiply
    12,239.13x = 16,889.38 × 6,860.91
  4. Step 4: Simplify right side
    12,239.13x = 115,876,516.14
  5. Step 5: Solve for x
    x = 115,876,516.14/12,239.13
  6. Step 6: Final answer
    x = 9,467.71

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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.