Home / 20,131.67-30,197.81-6,984.36

Finding the Fourth Proportional to 20,131.67, 30,197.81 and 6,984.36

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Solution

The fourth proportional to 20,131.67, 30,197.81 and 6,984.36 is: 10,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.67 : 30,197.81 = 6,984.36 : x
  2. Step 2: Convert to fraction form
    20,131.67/30,197.81 = 6,984.36/x
  3. Step 3: Cross multiply
    20,131.67x = 30,197.81 × 6,984.36
  4. Step 4: Simplify right side
    20,131.67x = 210,912,393.71
  5. Step 5: Solve for x
    x = 210,912,393.71/20,131.67
  6. Step 6: Final answer
    x = 10,476.65

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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.