Home / 13,916.28-20,882.52-5,157.30

Finding the Fourth Proportional to 13,916.28, 20,882.52 and 5,157.30

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Solution

The fourth proportional to 13,916.28, 20,882.52 and 5,157.30 is: 7,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.28 : 20,882.52 = 5,157.30 : x
  2. Step 2: Convert to fraction form
    13,916.28/20,882.52 = 5,157.30/x
  3. Step 3: Cross multiply
    13,916.28x = 20,882.52 × 5,157.30
  4. Step 4: Simplify right side
    13,916.28x = 107,697,420.40
  5. Step 5: Solve for x
    x = 107,697,420.40/13,916.28
  6. Step 6: Final answer
    x = 7,738.95

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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.