Home / 12,887,979.88-17,784,934.14-7,086,416.44

Finding the Fourth Proportional to 12,887,979.88, 17,784,934.14 and 7,086,416.44

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Solution

The fourth proportional to 12,887,979.88, 17,784,934.14 and 7,086,416.44 is: 9,778,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,979.88 : 17,784,934.14 = 7,086,416.44 : x
  2. Step 2: Convert to fraction form
    12,887,979.88/17,784,934.14 = 7,086,416.44/x
  3. Step 3: Cross multiply
    12,887,979.88x = 17,784,934.14 × 7,086,416.44
  4. Step 4: Simplify right side
    12,887,979.88x = 126,031,449,674,013.27
  5. Step 5: Solve for x
    x = 126,031,449,674,013.27/12,887,979.88
  6. Step 6: Final answer
    x = 9,778,991.81

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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.