Home / 20,489,855.72-28,276,011-11,322,498.56

Finding the Fourth Proportional to 20,489,855.72, 28,276,011 and 11,322,498.56

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Solution

The fourth proportional to 20,489,855.72, 28,276,011 and 11,322,498.56 is: 15,625,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,855.72 : 28,276,011 = 11,322,498.56 : x
  2. Step 2: Convert to fraction form
    20,489,855.72/28,276,011 = 11,322,498.56/x
  3. Step 3: Cross multiply
    20,489,855.72x = 28,276,011 × 11,322,498.56
  4. Step 4: Simplify right side
    20,489,855.72x = 320,155,093,830,044.19
  5. Step 5: Solve for x
    x = 320,155,093,830,044.19/20,489,855.72
  6. Step 6: Final answer
    x = 15,625,053.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.