Home / 20,760.84-31,115.34-10,375.56

Finding the Fourth Proportional to 20,760.84, 31,115.34 and 10,375.56

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Solution

The fourth proportional to 20,760.84, 31,115.34 and 10,375.56 is: 15,550.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.84 : 31,115.34 = 10,375.56 : x
  2. Step 2: Convert to fraction form
    20,760.84/31,115.34 = 10,375.56/x
  3. Step 3: Cross multiply
    20,760.84x = 31,115.34 × 10,375.56
  4. Step 4: Simplify right side
    20,760.84x = 322,839,077.09
  5. Step 5: Solve for x
    x = 322,839,077.09/20,760.84
  6. Step 6: Final answer
    x = 15,550.39

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1.5x scale

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.