Home / 13,561,381.22-18,719,616.93-8,979,178.82

Finding the Fourth Proportional to 13,561,381.22, 18,719,616.93 and 8,979,178.82

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Solution

The fourth proportional to 13,561,381.22, 18,719,616.93 and 8,979,178.82 is: 12,394,518.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561,381.22 : 18,719,616.93 = 8,979,178.82 : x
  2. Step 2: Convert to fraction form
    13,561,381.22/18,719,616.93 = 8,979,178.82/x
  3. Step 3: Cross multiply
    13,561,381.22x = 18,719,616.93 × 8,979,178.82
  4. Step 4: Simplify right side
    13,561,381.22x = 168,086,787,856,369.44
  5. Step 5: Solve for x
    x = 168,086,787,856,369.44/13,561,381.22
  6. Step 6: Final answer
    x = 12,394,518.31

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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.