Home / 20,871,906.70-28,799,983.01-11,930,889.25

Finding the Fourth Proportional to 20,871,906.70, 28,799,983.01 and 11,930,889.25

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Solution

The fourth proportional to 20,871,906.70, 28,799,983.01 and 11,930,889.25 is: 16,462,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871,906.70 : 28,799,983.01 = 11,930,889.25 : x
  2. Step 2: Convert to fraction form
    20,871,906.70/28,799,983.01 = 11,930,889.25/x
  3. Step 3: Cross multiply
    20,871,906.70x = 28,799,983.01 × 11,930,889.25
  4. Step 4: Simplify right side
    20,871,906.70x = 343,609,407,694,191.69
  5. Step 5: Solve for x
    x = 343,609,407,694,191.69/20,871,906.70
  6. Step 6: Final answer
    x = 16,462,770.39

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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.