Home / 11,115.48-15,351.96-7,572.54

Finding the Fourth Proportional to 11,115.48, 15,351.96 and 7,572.54

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Solution

The fourth proportional to 11,115.48, 15,351.96 and 7,572.54 is: 10,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.48 : 15,351.96 = 7,572.54 : x
  2. Step 2: Convert to fraction form
    11,115.48/15,351.96 = 7,572.54/x
  3. Step 3: Cross multiply
    11,115.48x = 15,351.96 × 7,572.54
  4. Step 4: Simplify right side
    11,115.48x = 116,253,331.18
  5. Step 5: Solve for x
    x = 116,253,331.18/11,115.48
  6. Step 6: Final answer
    x = 10,458.69

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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.