Home / 21,131,279.40-29,161,273.16-11,965,708.20

Finding the Fourth Proportional to 21,131,279.40, 29,161,273.16 and 11,965,708.20

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Solution

The fourth proportional to 21,131,279.40, 29,161,273.16 and 11,965,708.20 is: 16,512,738.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131,279.40 : 29,161,273.16 = 11,965,708.20 : x
  2. Step 2: Convert to fraction form
    21,131,279.40/29,161,273.16 = 11,965,708.20/x
  3. Step 3: Cross multiply
    21,131,279.40x = 29,161,273.16 × 11,965,708.20
  4. Step 4: Simplify right side
    21,131,279.40x = 348,935,285,373,051.88
  5. Step 5: Solve for x
    x = 348,935,285,373,051.88/21,131,279.40
  6. Step 6: Final answer
    x = 16,512,738.24

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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.