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Finding the Fourth Proportional to 16,940,357.64, 25,411,642.38 and 12,404,979.72

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Solution

The fourth proportional to 16,940,357.64, 25,411,642.38 and 12,404,979.72 is: 18,608,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,940,357.64 : 25,411,642.38 = 12,404,979.72 : x
  2. Step 2: Convert to fraction form
    16,940,357.64/25,411,642.38 = 12,404,979.72/x
  3. Step 3: Cross multiply
    16,940,357.64x = 25,411,642.38 × 12,404,979.72
  4. Step 4: Simplify right side
    16,940,357.64x = 315,230,908,375,792.56
  5. Step 5: Solve for x
    x = 315,230,908,375,792.56/16,940,357.64
  6. Step 6: Final answer
    x = 18,608,279.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.