Home / 20,663,755.56-28,515,267.12-11,370,456.60

Finding the Fourth Proportional to 20,663,755.56, 28,515,267.12 and 11,370,456.60

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Solution

The fourth proportional to 20,663,755.56, 28,515,267.12 and 11,370,456.60 is: 15,690,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663,755.56 : 28,515,267.12 = 11,370,456.60 : x
  2. Step 2: Convert to fraction form
    20,663,755.56/28,515,267.12 = 11,370,456.60/x
  3. Step 3: Cross multiply
    20,663,755.56x = 28,515,267.12 × 11,370,456.60
  4. Step 4: Simplify right side
    20,663,755.56x = 324,231,607,225,367
  5. Step 5: Solve for x
    x = 324,231,607,225,367/20,663,755.56
  6. Step 6: Final answer
    x = 15,690,836.37

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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.