Home / 21,121,531.20-31,682,296.80-16,870,003.20

Finding the Fourth Proportional to 21,121,531.20, 31,682,296.80 and 16,870,003.20

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Solution

The fourth proportional to 21,121,531.20, 31,682,296.80 and 16,870,003.20 is: 25,305,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,531.20 : 31,682,296.80 = 16,870,003.20 : x
  2. Step 2: Convert to fraction form
    21,121,531.20/31,682,296.80 = 16,870,003.20/x
  3. Step 3: Cross multiply
    21,121,531.20x = 31,682,296.80 × 16,870,003.20
  4. Step 4: Simplify right side
    21,121,531.20x = 534,480,448,399,349.75
  5. Step 5: Solve for x
    x = 534,480,448,399,349.75/21,121,531.20
  6. Step 6: Final answer
    x = 25,305,004.80

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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.