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Finding the Fourth Proportional to 20,661,879.45, 30,992,819.04 and 7,532,282.01

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Solution

The fourth proportional to 20,661,879.45, 30,992,819.04 and 7,532,282.01 is: 11,298,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661,879.45 : 30,992,819.04 = 7,532,282.01 : x
  2. Step 2: Convert to fraction form
    20,661,879.45/30,992,819.04 = 7,532,282.01/x
  3. Step 3: Cross multiply
    20,661,879.45x = 30,992,819.04 × 7,532,282.01
  4. Step 4: Simplify right side
    20,661,879.45x = 233,446,653,294,177.47
  5. Step 5: Solve for x
    x = 233,446,653,294,177.47/20,661,879.45
  6. Step 6: Final answer
    x = 11,298,422.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.