Home / 11,057.76-15,258.12-7,879.32

Finding the Fourth Proportional to 11,057.76, 15,258.12 and 7,879.32

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Solution

The fourth proportional to 11,057.76, 15,258.12 and 7,879.32 is: 10,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,057.76 : 15,258.12 = 7,879.32 : x
  2. Step 2: Convert to fraction form
    11,057.76/15,258.12 = 7,879.32/x
  3. Step 3: Cross multiply
    11,057.76x = 15,258.12 × 7,879.32
  4. Step 4: Simplify right side
    11,057.76x = 120,223,610.08
  5. Step 5: Solve for x
    x = 120,223,610.08/11,057.76
  6. Step 6: Final answer
    x = 10,872.33

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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.