Home / 28,651.36-42,979.11-11,994.64

Finding the Fourth Proportional to 28,651.36, 42,979.11 and 11,994.64

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Solution

The fourth proportional to 28,651.36, 42,979.11 and 11,994.64 is: 17,992.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.36 : 42,979.11 = 11,994.64 : x
  2. Step 2: Convert to fraction form
    28,651.36/42,979.11 = 11,994.64/x
  3. Step 3: Cross multiply
    28,651.36x = 42,979.11 × 11,994.64
  4. Step 4: Simplify right side
    28,651.36x = 515,518,951.97
  5. Step 5: Solve for x
    x = 515,518,951.97/28,651.36
  6. Step 6: Final answer
    x = 17,992.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.