Home / 21,054.43-31,600.77-11,201.95

Finding the Fourth Proportional to 21,054.43, 31,600.77 and 11,201.95

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Solution

The fourth proportional to 21,054.43, 31,600.77 and 11,201.95 is: 16,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.43 : 31,600.77 = 11,201.95 : x
  2. Step 2: Convert to fraction form
    21,054.43/31,600.77 = 11,201.95/x
  3. Step 3: Cross multiply
    21,054.43x = 31,600.77 × 11,201.95
  4. Step 4: Simplify right side
    21,054.43x = 353,990,245.50
  5. Step 5: Solve for x
    x = 353,990,245.50/21,054.43
  6. Step 6: Final answer
    x = 16,813.10

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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.