Home / 12,887,029.86-17,784,167.40-7,086,185.70

Finding the Fourth Proportional to 12,887,029.86, 17,784,167.40 and 7,086,185.70

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Solution

The fourth proportional to 12,887,029.86, 17,784,167.40 and 7,086,185.70 is: 9,778,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,029.86 : 17,784,167.40 = 7,086,185.70 : x
  2. Step 2: Convert to fraction form
    12,887,029.86/17,784,167.40 = 7,086,185.70/x
  3. Step 3: Cross multiply
    12,887,029.86x = 17,784,167.40 × 7,086,185.70
  4. Step 4: Simplify right side
    12,887,029.86x = 126,021,912,716,286.17
  5. Step 5: Solve for x
    x = 126,021,912,716,286.17/12,887,029.86
  6. Step 6: Final answer
    x = 9,778,972.66

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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.