Home / 13,928.20-20,899.12-6,908.88

Finding the Fourth Proportional to 13,928.20, 20,899.12 and 6,908.88

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Solution

The fourth proportional to 13,928.20, 20,899.12 and 6,908.88 is: 10,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.20 : 20,899.12 = 6,908.88 : x
  2. Step 2: Convert to fraction form
    13,928.20/20,899.12 = 6,908.88/x
  3. Step 3: Cross multiply
    13,928.20x = 20,899.12 × 6,908.88
  4. Step 4: Simplify right side
    13,928.20x = 144,389,512.19
  5. Step 5: Solve for x
    x = 144,389,512.19/13,928.20
  6. Step 6: Final answer
    x = 10,366.70

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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.