Home / 10,512.51-15,770.43-3,939.21

Finding the Fourth Proportional to 10,512.51, 15,770.43 and 3,939.21

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Solution

The fourth proportional to 10,512.51, 15,770.43 and 3,939.21 is: 5,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512.51 : 15,770.43 = 3,939.21 : x
  2. Step 2: Convert to fraction form
    10,512.51/15,770.43 = 3,939.21/x
  3. Step 3: Cross multiply
    10,512.51x = 15,770.43 × 3,939.21
  4. Step 4: Simplify right side
    10,512.51x = 62,123,035.56
  5. Step 5: Solve for x
    x = 62,123,035.56/10,512.51
  6. Step 6: Final answer
    x = 5,909.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.