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Finding the Fourth Proportional to 12,468.69, 17,206.79 and 6,879.69

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Solution

The fourth proportional to 12,468.69, 17,206.79 and 6,879.69 is: 9,493.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468.69 : 17,206.79 = 6,879.69 : x
  2. Step 2: Convert to fraction form
    12,468.69/17,206.79 = 6,879.69/x
  3. Step 3: Cross multiply
    12,468.69x = 17,206.79 × 6,879.69
  4. Step 4: Simplify right side
    12,468.69x = 118,377,381.10
  5. Step 5: Solve for x
    x = 118,377,381.10/12,468.69
  6. Step 6: Final answer
    x = 9,493.97

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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.