Home / 21,109,093.07-29,115,531.20-19,372,370.78

Finding the Fourth Proportional to 21,109,093.07, 29,115,531.20 and 19,372,370.78

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Solution

The fourth proportional to 21,109,093.07, 29,115,531.20 and 19,372,370.78 is: 26,720,089.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109,093.07 : 29,115,531.20 = 19,372,370.78 : x
  2. Step 2: Convert to fraction form
    21,109,093.07/29,115,531.20 = 19,372,370.78/x
  3. Step 3: Cross multiply
    21,109,093.07x = 29,115,531.20 × 19,372,370.78
  4. Step 4: Simplify right side
    21,109,093.07x = 564,036,865,766,196.50
  5. Step 5: Solve for x
    x = 564,036,865,766,196.50/21,109,093.07
  6. Step 6: Final answer
    x = 26,720,089.96

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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.