Home / 20,555,339.80-28,320,690.54-13,573,619.32

Finding the Fourth Proportional to 20,555,339.80, 28,320,690.54 and 13,573,619.32

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Solution

The fourth proportional to 20,555,339.80, 28,320,690.54 and 13,573,619.32 is: 18,701,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555,339.80 : 28,320,690.54 = 13,573,619.32 : x
  2. Step 2: Convert to fraction form
    20,555,339.80/28,320,690.54 = 13,573,619.32/x
  3. Step 3: Cross multiply
    20,555,339.80x = 28,320,690.54 × 13,573,619.32
  4. Step 4: Simplify right side
    20,555,339.80x = 384,414,272,269,485.25
  5. Step 5: Solve for x
    x = 384,414,272,269,485.25/20,555,339.80
  6. Step 6: Final answer
    x = 18,701,431.16

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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.