Home / 21,139,091.90-29,170,165.11-11,720,134.22

Finding the Fourth Proportional to 21,139,091.90, 29,170,165.11 and 11,720,134.22

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Solution

The fourth proportional to 21,139,091.90, 29,170,165.11 and 11,720,134.22 is: 16,172,797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,091.90 : 29,170,165.11 = 11,720,134.22 : x
  2. Step 2: Convert to fraction form
    21,139,091.90/29,170,165.11 = 11,720,134.22/x
  3. Step 3: Cross multiply
    21,139,091.90x = 29,170,165.11 × 11,720,134.22
  4. Step 4: Simplify right side
    21,139,091.90x = 341,878,250,308,761.06
  5. Step 5: Solve for x
    x = 341,878,250,308,761.06/21,139,091.90
  6. Step 6: Final answer
    x = 16,172,797.39

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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.