Home / 13,679.91-20,519.84-3,291.66

Finding the Fourth Proportional to 13,679.91, 20,519.84 and 3,291.66

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Solution

The fourth proportional to 13,679.91, 20,519.84 and 3,291.66 is: 4,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.91 : 20,519.84 = 3,291.66 : x
  2. Step 2: Convert to fraction form
    13,679.91/20,519.84 = 3,291.66/x
  3. Step 3: Cross multiply
    13,679.91x = 20,519.84 × 3,291.66
  4. Step 4: Simplify right side
    13,679.91x = 67,544,320.08
  5. Step 5: Solve for x
    x = 67,544,320.08/13,679.91
  6. Step 6: Final answer
    x = 4,937.48

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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.