Home / 20,721,101.52-31,063,924.08-7,950,771.12

Finding the Fourth Proportional to 20,721,101.52, 31,063,924.08 and 7,950,771.12

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Solution

The fourth proportional to 20,721,101.52, 31,063,924.08 and 7,950,771.12 is: 11,919,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,101.52 : 31,063,924.08 = 7,950,771.12 : x
  2. Step 2: Convert to fraction form
    20,721,101.52/31,063,924.08 = 7,950,771.12/x
  3. Step 3: Cross multiply
    20,721,101.52x = 31,063,924.08 × 7,950,771.12
  4. Step 4: Simplify right side
    20,721,101.52x = 246,982,150,449,136.56
  5. Step 5: Solve for x
    x = 246,982,150,449,136.56/20,721,101.52
  6. Step 6: Final answer
    x = 11,919,354.30

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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.