Home / 12,982,392.78-17,821,886.01-11,143,658.86

Finding the Fourth Proportional to 12,982,392.78, 17,821,886.01 and 11,143,658.86

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Solution

The fourth proportional to 12,982,392.78, 17,821,886.01 and 11,143,658.86 is: 15,297,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982,392.78 : 17,821,886.01 = 11,143,658.86 : x
  2. Step 2: Convert to fraction form
    12,982,392.78/17,821,886.01 = 11,143,658.86/x
  3. Step 3: Cross multiply
    12,982,392.78x = 17,821,886.01 × 11,143,658.86
  4. Step 4: Simplify right side
    12,982,392.78x = 198,601,017,892,691.84
  5. Step 5: Solve for x
    x = 198,601,017,892,691.84/12,982,392.78
  6. Step 6: Final answer
    x = 15,297,720.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.