Home / 11,990.80-16,542.12-8,258.32

Finding the Fourth Proportional to 11,990.80, 16,542.12 and 8,258.32

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Solution

The fourth proportional to 11,990.80, 16,542.12 and 8,258.32 is: 11,392.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.80 : 16,542.12 = 8,258.32 : x
  2. Step 2: Convert to fraction form
    11,990.80/16,542.12 = 8,258.32/x
  3. Step 3: Cross multiply
    11,990.80x = 16,542.12 × 8,258.32
  4. Step 4: Simplify right side
    11,990.80x = 136,610,120.44
  5. Step 5: Solve for x
    x = 136,610,120.44/11,990.80
  6. Step 6: Final answer
    x = 11,392.91

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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.