Home / 20,481.02-30,721.32-9,384.56

Finding the Fourth Proportional to 20,481.02, 30,721.32 and 9,384.56

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Solution

The fourth proportional to 20,481.02, 30,721.32 and 9,384.56 is: 14,076.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.02 : 30,721.32 = 9,384.56 : x
  2. Step 2: Convert to fraction form
    20,481.02/30,721.32 = 9,384.56/x
  3. Step 3: Cross multiply
    20,481.02x = 30,721.32 × 9,384.56
  4. Step 4: Simplify right side
    20,481.02x = 288,305,917.21
  5. Step 5: Solve for x
    x = 288,305,917.21/20,481.02
  6. Step 6: Final answer
    x = 14,076.74

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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.