Home / 20,227,309.72-27,916,418.19-11,408,571.21

Finding the Fourth Proportional to 20,227,309.72, 27,916,418.19 and 11,408,571.21

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Solution

The fourth proportional to 20,227,309.72, 27,916,418.19 and 11,408,571.21 is: 15,745,368.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,227,309.72 : 27,916,418.19 = 11,408,571.21 : x
  2. Step 2: Convert to fraction form
    20,227,309.72/27,916,418.19 = 11,408,571.21/x
  3. Step 3: Cross multiply
    20,227,309.72x = 27,916,418.19 × 11,408,571.21
  4. Step 4: Simplify right side
    20,227,309.72x = 318,486,444,775,020
  5. Step 5: Solve for x
    x = 318,486,444,775,020/20,227,309.72
  6. Step 6: Final answer
    x = 15,745,368.47

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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.