Home / 13,986.46-20,971.30-9,489.04

Finding the Fourth Proportional to 13,986.46, 20,971.30 and 9,489.04

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Solution

The fourth proportional to 13,986.46, 20,971.30 and 9,489.04 is: 14,227.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.46 : 20,971.30 = 9,489.04 : x
  2. Step 2: Convert to fraction form
    13,986.46/20,971.30 = 9,489.04/x
  3. Step 3: Cross multiply
    13,986.46x = 20,971.30 × 9,489.04
  4. Step 4: Simplify right side
    13,986.46x = 198,997,504.55
  5. Step 5: Solve for x
    x = 198,997,504.55/13,986.46
  6. Step 6: Final answer
    x = 14,227.87

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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.