Home / 13,943.21-20,913.28-4,082.58

Finding the Fourth Proportional to 13,943.21, 20,913.28 and 4,082.58

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Solution

The fourth proportional to 13,943.21, 20,913.28 and 4,082.58 is: 6,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.21 : 20,913.28 = 4,082.58 : x
  2. Step 2: Convert to fraction form
    13,943.21/20,913.28 = 4,082.58/x
  3. Step 3: Cross multiply
    13,943.21x = 20,913.28 × 4,082.58
  4. Step 4: Simplify right side
    13,943.21x = 85,380,128.46
  5. Step 5: Solve for x
    x = 85,380,128.46/13,943.21
  6. Step 6: Final answer
    x = 6,123.42

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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.