Home / 13,928.45-20,899.49-6,909.12

Finding the Fourth Proportional to 13,928.45, 20,899.49 and 6,909.12

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Solution

The fourth proportional to 13,928.45, 20,899.49 and 6,909.12 is: 10,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.45 : 20,899.49 = 6,909.12 : x
  2. Step 2: Convert to fraction form
    13,928.45/20,899.49 = 6,909.12/x
  3. Step 3: Cross multiply
    13,928.45x = 20,899.49 × 6,909.12
  4. Step 4: Simplify right side
    13,928.45x = 144,397,049.80
  5. Step 5: Solve for x
    x = 144,397,049.80/13,928.45
  6. Step 6: Final answer
    x = 10,367.06

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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.