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Finding the Fourth Proportional to 18,695,965.80, 28,046,573.10 and 5,915,137.80

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Solution

The fourth proportional to 18,695,965.80, 28,046,573.10 and 5,915,137.80 is: 8,873,537.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695,965.80 : 28,046,573.10 = 5,915,137.80 : x
  2. Step 2: Convert to fraction form
    18,695,965.80/28,046,573.10 = 5,915,137.80/x
  3. Step 3: Cross multiply
    18,695,965.80x = 28,046,573.10 × 5,915,137.80
  4. Step 4: Simplify right side
    18,695,965.80x = 165,899,344,704,273.19
  5. Step 5: Solve for x
    x = 165,899,344,704,273.19/18,695,965.80
  6. Step 6: Final answer
    x = 8,873,537.02

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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.