Home / 13,912.92-20,768.16-12,885.03

Finding the Fourth Proportional to 13,912.92, 20,768.16 and 12,885.03

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Solution

The fourth proportional to 13,912.92, 20,768.16 and 12,885.03 is: 19,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.92 : 20,768.16 = 12,885.03 : x
  2. Step 2: Convert to fraction form
    13,912.92/20,768.16 = 12,885.03/x
  3. Step 3: Cross multiply
    13,912.92x = 20,768.16 × 12,885.03
  4. Step 4: Simplify right side
    13,912.92x = 267,598,364.64
  5. Step 5: Solve for x
    x = 267,598,364.64/13,912.92
  6. Step 6: Final answer
    x = 19,233.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.