Home / 20,110.47-30,170.04-6,784.80

Finding the Fourth Proportional to 20,110.47, 30,170.04 and 6,784.80

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Solution

The fourth proportional to 20,110.47, 30,170.04 and 6,784.80 is: 10,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.47 : 30,170.04 = 6,784.80 : x
  2. Step 2: Convert to fraction form
    20,110.47/30,170.04 = 6,784.80/x
  3. Step 3: Cross multiply
    20,110.47x = 30,170.04 × 6,784.80
  4. Step 4: Simplify right side
    20,110.47x = 204,697,687.39
  5. Step 5: Solve for x
    x = 204,697,687.39/20,110.47
  6. Step 6: Final answer
    x = 10,178.66

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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.