Home / 11,211.29-15,465.79-7,226.09

Finding the Fourth Proportional to 11,211.29, 15,465.79 and 7,226.09

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Solution

The fourth proportional to 11,211.29, 15,465.79 and 7,226.09 is: 9,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.29 : 15,465.79 = 7,226.09 : x
  2. Step 2: Convert to fraction form
    11,211.29/15,465.79 = 7,226.09/x
  3. Step 3: Cross multiply
    11,211.29x = 15,465.79 × 7,226.09
  4. Step 4: Simplify right side
    11,211.29x = 111,757,247.19
  5. Step 5: Solve for x
    x = 111,757,247.19/11,211.29
  6. Step 6: Final answer
    x = 9,968.28

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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.