Home / 20,320.02-30,481.74-7,839.54

Finding the Fourth Proportional to 20,320.02, 30,481.74 and 7,839.54

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Solution

The fourth proportional to 20,320.02, 30,481.74 and 7,839.54 is: 11,759.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.02 : 30,481.74 = 7,839.54 : x
  2. Step 2: Convert to fraction form
    20,320.02/30,481.74 = 7,839.54/x
  3. Step 3: Cross multiply
    20,320.02x = 30,481.74 × 7,839.54
  4. Step 4: Simplify right side
    20,320.02x = 238,962,820.00
  5. Step 5: Solve for x
    x = 238,962,820.00/20,320.02
  6. Step 6: Final answer
    x = 11,759.97

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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.