Home / 13,943.28-20,915.49-4,082.56

Finding the Fourth Proportional to 13,943.28, 20,915.49 and 4,082.56

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Solution

The fourth proportional to 13,943.28, 20,915.49 and 4,082.56 is: 6,124.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.28 : 20,915.49 = 4,082.56 : x
  2. Step 2: Convert to fraction form
    13,943.28/20,915.49 = 4,082.56/x
  3. Step 3: Cross multiply
    13,943.28x = 20,915.49 × 4,082.56
  4. Step 4: Simplify right side
    13,943.28x = 85,388,742.85
  5. Step 5: Solve for x
    x = 85,388,742.85/13,943.28
  6. Step 6: Final answer
    x = 6,124.01

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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.