Home / 19,987,682.40-29,981,523.60-8,620,207.20

Finding the Fourth Proportional to 19,987,682.40, 29,981,523.60 and 8,620,207.20

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Solution

The fourth proportional to 19,987,682.40, 29,981,523.60 and 8,620,207.20 is: 12,930,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987,682.40 : 29,981,523.60 = 8,620,207.20 : x
  2. Step 2: Convert to fraction form
    19,987,682.40/29,981,523.60 = 8,620,207.20/x
  3. Step 3: Cross multiply
    19,987,682.40x = 29,981,523.60 × 8,620,207.20
  4. Step 4: Simplify right side
    19,987,682.40x = 258,446,945,603,689.91
  5. Step 5: Solve for x
    x = 258,446,945,603,689.91/19,987,682.40
  6. Step 6: Final answer
    x = 12,930,310.80

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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.