Home / 20,723.88-31,087.81-8,241.13

Finding the Fourth Proportional to 20,723.88, 31,087.81 and 8,241.13

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Solution

The fourth proportional to 20,723.88, 31,087.81 and 8,241.13 is: 12,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.88 : 31,087.81 = 8,241.13 : x
  2. Step 2: Convert to fraction form
    20,723.88/31,087.81 = 8,241.13/x
  3. Step 3: Cross multiply
    20,723.88x = 31,087.81 × 8,241.13
  4. Step 4: Simplify right side
    20,723.88x = 256,198,683.63
  5. Step 5: Solve for x
    x = 256,198,683.63/20,723.88
  6. Step 6: Final answer
    x = 12,362.49

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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.