Home / 13,909.23-20,863.85-3,521.79

Finding the Fourth Proportional to 13,909.23, 20,863.85 and 3,521.79

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Solution

The fourth proportional to 13,909.23, 20,863.85 and 3,521.79 is: 5,282.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.23 : 20,863.85 = 3,521.79 : x
  2. Step 2: Convert to fraction form
    13,909.23/20,863.85 = 3,521.79/x
  3. Step 3: Cross multiply
    13,909.23x = 20,863.85 × 3,521.79
  4. Step 4: Simplify right side
    13,909.23x = 73,478,080.68
  5. Step 5: Solve for x
    x = 73,478,080.68/13,909.23
  6. Step 6: Final answer
    x = 5,282.69

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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.