Home / 11,122.48-15,361.62-7,579.54

Finding the Fourth Proportional to 11,122.48, 15,361.62 and 7,579.54

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Solution

The fourth proportional to 11,122.48, 15,361.62 and 7,579.54 is: 10,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.48 : 15,361.62 = 7,579.54 : x
  2. Step 2: Convert to fraction form
    11,122.48/15,361.62 = 7,579.54/x
  3. Step 3: Cross multiply
    11,122.48x = 15,361.62 × 7,579.54
  4. Step 4: Simplify right side
    11,122.48x = 116,434,013.25
  5. Step 5: Solve for x
    x = 116,434,013.25/11,122.48
  6. Step 6: Final answer
    x = 10,468.35

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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.