Home / 20,663.94-28,517.10-11,711.34

Finding the Fourth Proportional to 20,663.94, 28,517.10 and 11,711.34

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Solution

The fourth proportional to 20,663.94, 28,517.10 and 11,711.34 is: 16,162.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.94 : 28,517.10 = 11,711.34 : x
  2. Step 2: Convert to fraction form
    20,663.94/28,517.10 = 11,711.34/x
  3. Step 3: Cross multiply
    20,663.94x = 28,517.10 × 11,711.34
  4. Step 4: Simplify right side
    20,663.94x = 333,973,453.91
  5. Step 5: Solve for x
    x = 333,973,453.91/20,663.94
  6. Step 6: Final answer
    x = 16,162.14

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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.