Home / 20,780.37-31,170.56-9,694.82

Finding the Fourth Proportional to 20,780.37, 31,170.56 and 9,694.82

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Solution

The fourth proportional to 20,780.37, 31,170.56 and 9,694.82 is: 14,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.37 : 31,170.56 = 9,694.82 : x
  2. Step 2: Convert to fraction form
    20,780.37/31,170.56 = 9,694.82/x
  3. Step 3: Cross multiply
    20,780.37x = 31,170.56 × 9,694.82
  4. Step 4: Simplify right side
    20,780.37x = 302,192,997.95
  5. Step 5: Solve for x
    x = 302,192,997.95/20,780.37
  6. Step 6: Final answer
    x = 14,542.23

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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.