Home / 13,315.28-19,974.84-4,082

Finding the Fourth Proportional to 13,315.28, 19,974.84 and 4,082

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Solution

The fourth proportional to 13,315.28, 19,974.84 and 4,082 is: 6,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.28 : 19,974.84 = 4,082 : x
  2. Step 2: Convert to fraction form
    13,315.28/19,974.84 = 4,082/x
  3. Step 3: Cross multiply
    13,315.28x = 19,974.84 × 4,082
  4. Step 4: Simplify right side
    13,315.28x = 81,537,296.88
  5. Step 5: Solve for x
    x = 81,537,296.88/13,315.28
  6. Step 6: Final answer
    x = 6,123.59

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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.