Home / 11,218.23-16,821.39-3,319.66

Finding the Fourth Proportional to 11,218.23, 16,821.39 and 3,319.66

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Solution

The fourth proportional to 11,218.23, 16,821.39 and 3,319.66 is: 4,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.23 : 16,821.39 = 3,319.66 : x
  2. Step 2: Convert to fraction form
    11,218.23/16,821.39 = 3,319.66/x
  3. Step 3: Cross multiply
    11,218.23x = 16,821.39 × 3,319.66
  4. Step 4: Simplify right side
    11,218.23x = 55,841,312.39
  5. Step 5: Solve for x
    x = 55,841,312.39/11,218.23
  6. Step 6: Final answer
    x = 4,977.73

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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.