Home / 13,803.39-20,701.61-3,942.72

Finding the Fourth Proportional to 13,803.39, 20,701.61 and 3,942.72

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Solution

The fourth proportional to 13,803.39, 20,701.61 and 3,942.72 is: 5,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.39 : 20,701.61 = 3,942.72 : x
  2. Step 2: Convert to fraction form
    13,803.39/20,701.61 = 3,942.72/x
  3. Step 3: Cross multiply
    13,803.39x = 20,701.61 × 3,942.72
  4. Step 4: Simplify right side
    13,803.39x = 81,620,646.85
  5. Step 5: Solve for x
    x = 81,620,646.85/13,803.39
  6. Step 6: Final answer
    x = 5,913.09

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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.