Home / 15,138,963.88-20,888,651.46-8,699,191.72

Finding the Fourth Proportional to 15,138,963.88, 20,888,651.46 and 8,699,191.72

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Solution

The fourth proportional to 15,138,963.88, 20,888,651.46 and 8,699,191.72 is: 12,003,092.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138,963.88 : 20,888,651.46 = 8,699,191.72 : x
  2. Step 2: Convert to fraction form
    15,138,963.88/20,888,651.46 = 8,699,191.72/x
  3. Step 3: Cross multiply
    15,138,963.88x = 20,888,651.46 × 8,699,191.72
  4. Step 4: Simplify right side
    15,138,963.88x = 181,714,383,822,797.94
  5. Step 5: Solve for x
    x = 181,714,383,822,797.94/15,138,963.88
  6. Step 6: Final answer
    x = 12,003,092.50

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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.