Home / 20,935.32-28,890.70-11,504.49

Finding the Fourth Proportional to 20,935.32, 28,890.70 and 11,504.49

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Solution

The fourth proportional to 20,935.32, 28,890.70 and 11,504.49 is: 15,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.32 : 28,890.70 = 11,504.49 : x
  2. Step 2: Convert to fraction form
    20,935.32/28,890.70 = 11,504.49/x
  3. Step 3: Cross multiply
    20,935.32x = 28,890.70 × 11,504.49
  4. Step 4: Simplify right side
    20,935.32x = 332,372,769.24
  5. Step 5: Solve for x
    x = 332,372,769.24/20,935.32
  6. Step 6: Final answer
    x = 15,876.17

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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.