Home / 10,614.28-15,928.68-3,688.78

Finding the Fourth Proportional to 10,614.28, 15,928.68 and 3,688.78

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Solution

The fourth proportional to 10,614.28, 15,928.68 and 3,688.78 is: 5,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.28 : 15,928.68 = 3,688.78 : x
  2. Step 2: Convert to fraction form
    10,614.28/15,928.68 = 3,688.78/x
  3. Step 3: Cross multiply
    10,614.28x = 15,928.68 × 3,688.78
  4. Step 4: Simplify right side
    10,614.28x = 58,757,396.21
  5. Step 5: Solve for x
    x = 58,757,396.21/10,614.28
  6. Step 6: Final answer
    x = 5,535.69

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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.