Home / 21,082.28-29,096.44-12,129.62

Finding the Fourth Proportional to 21,082.28, 29,096.44 and 12,129.62

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Solution

The fourth proportional to 21,082.28, 29,096.44 and 12,129.62 is: 16,740.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.28 : 29,096.44 = 12,129.62 : x
  2. Step 2: Convert to fraction form
    21,082.28/29,096.44 = 12,129.62/x
  3. Step 3: Cross multiply
    21,082.28x = 29,096.44 × 12,129.62
  4. Step 4: Simplify right side
    21,082.28x = 352,928,760.55
  5. Step 5: Solve for x
    x = 352,928,760.55/21,082.28
  6. Step 6: Final answer
    x = 16,740.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.