Home / 28,660.36-42,992.66-12,003.64

Finding the Fourth Proportional to 28,660.36, 42,992.66 and 12,003.64

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Solution

The fourth proportional to 28,660.36, 42,992.66 and 12,003.64 is: 18,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.36 : 42,992.66 = 12,003.64 : x
  2. Step 2: Convert to fraction form
    28,660.36/42,992.66 = 12,003.64/x
  3. Step 3: Cross multiply
    28,660.36x = 42,992.66 × 12,003.64
  4. Step 4: Simplify right side
    28,660.36x = 516,068,413.28
  5. Step 5: Solve for x
    x = 516,068,413.28/28,660.36
  6. Step 6: Final answer
    x = 18,006.35

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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.