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Finding the Fourth Proportional to 9,084.10, 13,626.15 and 8,220.10

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Solution

The fourth proportional to 9,084.10, 13,626.15 and 8,220.10 is: 12,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,084.10 : 13,626.15 = 8,220.10 : x
  2. Step 2: Convert to fraction form
    9,084.10/13,626.15 = 8,220.10/x
  3. Step 3: Cross multiply
    9,084.10x = 13,626.15 × 8,220.10
  4. Step 4: Simplify right side
    9,084.10x = 112,008,315.62
  5. Step 5: Solve for x
    x = 112,008,315.62/9,084.10
  6. Step 6: Final answer
    x = 12,330.15

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Half scale
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Double scale
Find fourth proportional to 9,085.10, 13,627.65 and 8,221.10
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.