Home / 20,131.72-30,197.60-6,984.12

Finding the Fourth Proportional to 20,131.72, 30,197.60 and 6,984.12

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Solution

The fourth proportional to 20,131.72, 30,197.60 and 6,984.12 is: 10,476.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.72 : 30,197.60 = 6,984.12 : x
  2. Step 2: Convert to fraction form
    20,131.72/30,197.60 = 6,984.12/x
  3. Step 3: Cross multiply
    20,131.72x = 30,197.60 × 6,984.12
  4. Step 4: Simplify right side
    20,131.72x = 210,903,662.11
  5. Step 5: Solve for x
    x = 210,903,662.11/20,131.72
  6. Step 6: Final answer
    x = 10,476.19

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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.