Home / 20,616.39-28,450.44-11,663.82

Finding the Fourth Proportional to 20,616.39, 28,450.44 and 11,663.82

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Solution

The fourth proportional to 20,616.39, 28,450.44 and 11,663.82 is: 16,095.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.39 : 28,450.44 = 11,663.82 : x
  2. Step 2: Convert to fraction form
    20,616.39/28,450.44 = 11,663.82/x
  3. Step 3: Cross multiply
    20,616.39x = 28,450.44 × 11,663.82
  4. Step 4: Simplify right side
    20,616.39x = 331,840,811.08
  5. Step 5: Solve for x
    x = 331,840,811.08/20,616.39
  6. Step 6: Final answer
    x = 16,095.97

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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.