Home / 21,278,767.11-29,363,033.43-11,985,930.74

Finding the Fourth Proportional to 21,278,767.11, 29,363,033.43 and 11,985,930.74

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Solution

The fourth proportional to 21,278,767.11, 29,363,033.43 and 11,985,930.74 is: 16,539,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,767.11 : 29,363,033.43 = 11,985,930.74 : x
  2. Step 2: Convert to fraction form
    21,278,767.11/29,363,033.43 = 11,985,930.74/x
  3. Step 3: Cross multiply
    21,278,767.11x = 29,363,033.43 × 11,985,930.74
  4. Step 4: Simplify right side
    21,278,767.11x = 351,943,284,861,469.44
  5. Step 5: Solve for x
    x = 351,943,284,861,469.44/21,278,767.11
  6. Step 6: Final answer
    x = 16,539,646.45

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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.