Home / 13,340.13-20,011.22-3,979.43

Finding the Fourth Proportional to 13,340.13, 20,011.22 and 3,979.43

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Solution

The fourth proportional to 13,340.13, 20,011.22 and 3,979.43 is: 5,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.13 : 20,011.22 = 3,979.43 : x
  2. Step 2: Convert to fraction form
    13,340.13/20,011.22 = 3,979.43/x
  3. Step 3: Cross multiply
    13,340.13x = 20,011.22 × 3,979.43
  4. Step 4: Simplify right side
    13,340.13x = 79,633,249.20
  5. Step 5: Solve for x
    x = 79,633,249.20/13,340.13
  6. Step 6: Final answer
    x = 5,969.45

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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.