Home / 13,811.37-20,717.04-3,423.12

Finding the Fourth Proportional to 13,811.37, 20,717.04 and 3,423.12

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Solution

The fourth proportional to 13,811.37, 20,717.04 and 3,423.12 is: 5,134.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.37 : 20,717.04 = 3,423.12 : x
  2. Step 2: Convert to fraction form
    13,811.37/20,717.04 = 3,423.12/x
  3. Step 3: Cross multiply
    13,811.37x = 20,717.04 × 3,423.12
  4. Step 4: Simplify right side
    13,811.37x = 70,916,913.96
  5. Step 5: Solve for x
    x = 70,916,913.96/13,811.37
  6. Step 6: Final answer
    x = 5,134.68

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1.5x scale

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.