Home / 21,657,791.34-29,887,752.37-11,868,620.78

Finding the Fourth Proportional to 21,657,791.34, 29,887,752.37 and 11,868,620.78

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Solution

The fourth proportional to 21,657,791.34, 29,887,752.37 and 11,868,620.78 is: 16,378,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657,791.34 : 29,887,752.37 = 11,868,620.78 : x
  2. Step 2: Convert to fraction form
    21,657,791.34/29,887,752.37 = 11,868,620.78/x
  3. Step 3: Cross multiply
    21,657,791.34x = 29,887,752.37 × 11,868,620.78
  4. Step 4: Simplify right side
    21,657,791.34x = 354,726,398,846,076.25
  5. Step 5: Solve for x
    x = 354,726,398,846,076.25/21,657,791.34
  6. Step 6: Final answer
    x = 16,378,696.85

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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.