Home / 20,330,555.72-28,056,167.03-11,163,198.47

Finding the Fourth Proportional to 20,330,555.72, 28,056,167.03 and 11,163,198.47

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Solution

The fourth proportional to 20,330,555.72, 28,056,167.03 and 11,163,198.47 is: 15,405,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330,555.72 : 28,056,167.03 = 11,163,198.47 : x
  2. Step 2: Convert to fraction form
    20,330,555.72/28,056,167.03 = 11,163,198.47/x
  3. Step 3: Cross multiply
    20,330,555.72x = 28,056,167.03 × 11,163,198.47
  4. Step 4: Simplify right side
    20,330,555.72x = 313,196,560,750,987.56
  5. Step 5: Solve for x
    x = 313,196,560,750,987.56/20,330,555.72
  6. Step 6: Final answer
    x = 15,405,213.96

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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.