Home / 21,199,687.20-31,799,530.80-19,782,511.20

Finding the Fourth Proportional to 21,199,687.20, 31,799,530.80 and 19,782,511.20

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Solution

The fourth proportional to 21,199,687.20, 31,799,530.80 and 19,782,511.20 is: 29,673,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199,687.20 : 31,799,530.80 = 19,782,511.20 : x
  2. Step 2: Convert to fraction form
    21,199,687.20/31,799,530.80 = 19,782,511.20/x
  3. Step 3: Cross multiply
    21,199,687.20x = 31,799,530.80 × 19,782,511.20
  4. Step 4: Simplify right side
    21,199,687.20x = 629,074,574,205,745
  5. Step 5: Solve for x
    x = 629,074,574,205,745/21,199,687.20
  6. Step 6: Final answer
    x = 29,673,766.80

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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.