Home / 20,663.88-28,516.32-11,232.42

Finding the Fourth Proportional to 20,663.88, 28,516.32 and 11,232.42

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Solution

The fourth proportional to 20,663.88, 28,516.32 and 11,232.42 is: 15,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.88 : 28,516.32 = 11,232.42 : x
  2. Step 2: Convert to fraction form
    20,663.88/28,516.32 = 11,232.42/x
  3. Step 3: Cross multiply
    20,663.88x = 28,516.32 × 11,232.42
  4. Step 4: Simplify right side
    20,663.88x = 320,307,283.09
  5. Step 5: Solve for x
    x = 320,307,283.09/20,663.88
  6. Step 6: Final answer
    x = 15,500.83

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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.