Home / 11,578.96-15,979.26-7,105.19

Finding the Fourth Proportional to 11,578.96, 15,979.26 and 7,105.19

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Solution

The fourth proportional to 11,578.96, 15,979.26 and 7,105.19 is: 9,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,578.96 : 15,979.26 = 7,105.19 : x
  2. Step 2: Convert to fraction form
    11,578.96/15,979.26 = 7,105.19/x
  3. Step 3: Cross multiply
    11,578.96x = 15,979.26 × 7,105.19
  4. Step 4: Simplify right side
    11,578.96x = 113,535,625.11
  5. Step 5: Solve for x
    x = 113,535,625.11/11,578.96
  6. Step 6: Final answer
    x = 9,805.34

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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.