Home / 20,555,338.80-28,320,689.16-13,573,618.32

Finding the Fourth Proportional to 20,555,338.80, 28,320,689.16 and 13,573,618.32

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Solution

The fourth proportional to 20,555,338.80, 28,320,689.16 and 13,573,618.32 is: 18,701,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555,338.80 : 28,320,689.16 = 13,573,618.32 : x
  2. Step 2: Convert to fraction form
    20,555,338.80/28,320,689.16 = 13,573,618.32/x
  3. Step 3: Cross multiply
    20,555,338.80x = 28,320,689.16 × 13,573,618.32
  4. Step 4: Simplify right side
    20,555,338.80x = 384,414,225,217,201.44
  5. Step 5: Solve for x
    x = 384,414,225,217,201.44/20,555,338.80
  6. Step 6: Final answer
    x = 18,701,429.78

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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.