Home / 12,479.29-17,221.46-6,814.09

Finding the Fourth Proportional to 12,479.29, 17,221.46 and 6,814.09

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Solution

The fourth proportional to 12,479.29, 17,221.46 and 6,814.09 is: 9,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.29 : 17,221.46 = 6,814.09 : x
  2. Step 2: Convert to fraction form
    12,479.29/17,221.46 = 6,814.09/x
  3. Step 3: Cross multiply
    12,479.29x = 17,221.46 × 6,814.09
  4. Step 4: Simplify right side
    12,479.29x = 117,348,578.37
  5. Step 5: Solve for x
    x = 117,348,578.37/12,479.29
  6. Step 6: Final answer
    x = 9,403.47

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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.