Home / 9,408.20-14,112.30-7,680.20

Finding the Fourth Proportional to 9,408.20, 14,112.30 and 7,680.20

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Solution

The fourth proportional to 9,408.20, 14,112.30 and 7,680.20 is: 11,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.20 : 14,112.30 = 7,680.20 : x
  2. Step 2: Convert to fraction form
    9,408.20/14,112.30 = 7,680.20/x
  3. Step 3: Cross multiply
    9,408.20x = 14,112.30 × 7,680.20
  4. Step 4: Simplify right side
    9,408.20x = 108,385,286.46
  5. Step 5: Solve for x
    x = 108,385,286.46/9,408.20
  6. Step 6: Final answer
    x = 11,520.30

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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.