Home / 12,887,042.86-17,784,185.34-7,086,198.70

Finding the Fourth Proportional to 12,887,042.86, 17,784,185.34 and 7,086,198.70

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Solution

The fourth proportional to 12,887,042.86, 17,784,185.34 and 7,086,198.70 is: 9,778,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,042.86 : 17,784,185.34 = 7,086,198.70 : x
  2. Step 2: Convert to fraction form
    12,887,042.86/17,784,185.34 = 7,086,198.70/x
  3. Step 3: Cross multiply
    12,887,042.86x = 17,784,185.34 × 7,086,198.70
  4. Step 4: Simplify right side
    12,887,042.86x = 126,022,271,036,867.06
  5. Step 5: Solve for x
    x = 126,022,271,036,867.06/12,887,042.86
  6. Step 6: Final answer
    x = 9,778,990.60

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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.