Home / 20,385,697-28,132,266.43-11,218,339.74

Finding the Fourth Proportional to 20,385,697, 28,132,266.43 and 11,218,339.74

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Solution

The fourth proportional to 20,385,697, 28,132,266.43 and 11,218,339.74 is: 15,481,311.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385,697 : 28,132,266.43 = 11,218,339.74 : x
  2. Step 2: Convert to fraction form
    20,385,697/28,132,266.43 = 11,218,339.74/x
  3. Step 3: Cross multiply
    20,385,697x = 28,132,266.43 × 11,218,339.74
  4. Step 4: Simplify right side
    20,385,697x = 315,597,322,467,936.94
  5. Step 5: Solve for x
    x = 315,597,322,467,936.94/20,385,697
  6. Step 6: Final answer
    x = 15,481,311.36

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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.