Home / 12,355.79-18,535.50-3,589.56

Finding the Fourth Proportional to 12,355.79, 18,535.50 and 3,589.56

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Solution

The fourth proportional to 12,355.79, 18,535.50 and 3,589.56 is: 5,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.79 : 18,535.50 = 3,589.56 : x
  2. Step 2: Convert to fraction form
    12,355.79/18,535.50 = 3,589.56/x
  3. Step 3: Cross multiply
    12,355.79x = 18,535.50 × 3,589.56
  4. Step 4: Simplify right side
    12,355.79x = 66,534,289.38
  5. Step 5: Solve for x
    x = 66,534,289.38/12,355.79
  6. Step 6: Final answer
    x = 5,384.87

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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.