Home / 37,679.36-51,998.40-20,912

Finding the Fourth Proportional to 37,679.36, 51,998.40 and 20,912

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Solution

The fourth proportional to 37,679.36, 51,998.40 and 20,912 is: 28,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,679.36 : 51,998.40 = 20,912 : x
  2. Step 2: Convert to fraction form
    37,679.36/51,998.40 = 20,912/x
  3. Step 3: Cross multiply
    37,679.36x = 51,998.40 × 20,912
  4. Step 4: Simplify right side
    37,679.36x = 1,087,390,540.80
  5. Step 5: Solve for x
    x = 1,087,390,540.80/37,679.36
  6. Step 6: Final answer
    x = 28,859.05

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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.