Home / 20,663.20-28,514.88-11,232

Finding the Fourth Proportional to 20,663.20, 28,514.88 and 11,232

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Solution

The fourth proportional to 20,663.20, 28,514.88 and 11,232 is: 15,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.20 : 28,514.88 = 11,232 : x
  2. Step 2: Convert to fraction form
    20,663.20/28,514.88 = 11,232/x
  3. Step 3: Cross multiply
    20,663.20x = 28,514.88 × 11,232
  4. Step 4: Simplify right side
    20,663.20x = 320,279,132.16
  5. Step 5: Solve for x
    x = 320,279,132.16/20,663.20
  6. Step 6: Final answer
    x = 15,499.98

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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.