Home / 20,663.82-28,516.05-11,232.45

Finding the Fourth Proportional to 20,663.82, 28,516.05 and 11,232.45

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Solution

The fourth proportional to 20,663.82, 28,516.05 and 11,232.45 is: 15,500.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.82 : 28,516.05 = 11,232.45 : x
  2. Step 2: Convert to fraction form
    20,663.82/28,516.05 = 11,232.45/x
  3. Step 3: Cross multiply
    20,663.82x = 28,516.05 × 11,232.45
  4. Step 4: Simplify right side
    20,663.82x = 320,305,105.82
  5. Step 5: Solve for x
    x = 320,305,105.82/20,663.82
  6. Step 6: Final answer
    x = 15,500.77

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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.