Home / 20,519.17-30,778.75-4,936.79

Finding the Fourth Proportional to 20,519.17, 30,778.75 and 4,936.79

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Solution

The fourth proportional to 20,519.17, 30,778.75 and 4,936.79 is: 7,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.17 : 30,778.75 = 4,936.79 : x
  2. Step 2: Convert to fraction form
    20,519.17/30,778.75 = 4,936.79/x
  3. Step 3: Cross multiply
    20,519.17x = 30,778.75 × 4,936.79
  4. Step 4: Simplify right side
    20,519.17x = 151,948,200.53
  5. Step 5: Solve for x
    x = 151,948,200.53/20,519.17
  6. Step 6: Final answer
    x = 7,405.18

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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.