Home / 9,137.20-13,705.80-8,043.70

Finding the Fourth Proportional to 9,137.20, 13,705.80 and 8,043.70

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Solution

The fourth proportional to 9,137.20, 13,705.80 and 8,043.70 is: 12,065.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.20 : 13,705.80 = 8,043.70 : x
  2. Step 2: Convert to fraction form
    9,137.20/13,705.80 = 8,043.70/x
  3. Step 3: Cross multiply
    9,137.20x = 13,705.80 × 8,043.70
  4. Step 4: Simplify right side
    9,137.20x = 110,245,343.46
  5. Step 5: Solve for x
    x = 110,245,343.46/9,137.20
  6. Step 6: Final answer
    x = 12,065.55

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Similar ratio
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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.