Home / 9,108.40-13,662.60-8,889.70

Finding the Fourth Proportional to 9,108.40, 13,662.60 and 8,889.70

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Solution

The fourth proportional to 9,108.40, 13,662.60 and 8,889.70 is: 13,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.40 : 13,662.60 = 8,889.70 : x
  2. Step 2: Convert to fraction form
    9,108.40/13,662.60 = 8,889.70/x
  3. Step 3: Cross multiply
    9,108.40x = 13,662.60 × 8,889.70
  4. Step 4: Simplify right side
    9,108.40x = 121,456,415.22
  5. Step 5: Solve for x
    x = 121,456,415.22/9,108.40
  6. Step 6: Final answer
    x = 13,334.55

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Double scale
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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.