Home / 20,750.43-31,109.70-10,744.45

Finding the Fourth Proportional to 20,750.43, 31,109.70 and 10,744.45

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Solution

The fourth proportional to 20,750.43, 31,109.70 and 10,744.45 is: 16,108.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.43 : 31,109.70 = 10,744.45 : x
  2. Step 2: Convert to fraction form
    20,750.43/31,109.70 = 10,744.45/x
  3. Step 3: Cross multiply
    20,750.43x = 31,109.70 × 10,744.45
  4. Step 4: Simplify right side
    20,750.43x = 334,256,562.44
  5. Step 5: Solve for x
    x = 334,256,562.44/20,750.43
  6. Step 6: Final answer
    x = 16,108.42

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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.