Home / 13,623.20-20,434.78-3,627.95

Finding the Fourth Proportional to 13,623.20, 20,434.78 and 3,627.95

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Solution

The fourth proportional to 13,623.20, 20,434.78 and 3,627.95 is: 5,441.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.20 : 20,434.78 = 3,627.95 : x
  2. Step 2: Convert to fraction form
    13,623.20/20,434.78 = 3,627.95/x
  3. Step 3: Cross multiply
    13,623.20x = 20,434.78 × 3,627.95
  4. Step 4: Simplify right side
    13,623.20x = 74,136,406.14
  5. Step 5: Solve for x
    x = 74,136,406.14/13,623.20
  6. Step 6: Final answer
    x = 5,441.92

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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.