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Finding the Fourth Proportional to 9,253.68, 12,855.68 and 9,167.21

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Solution

The fourth proportional to 9,253.68, 12,855.68 and 9,167.21 is: 12,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,253.68 : 12,855.68 = 9,167.21 : x
  2. Step 2: Convert to fraction form
    9,253.68/12,855.68 = 9,167.21/x
  3. Step 3: Cross multiply
    9,253.68x = 12,855.68 × 9,167.21
  4. Step 4: Simplify right side
    9,253.68x = 117,850,608.14
  5. Step 5: Solve for x
    x = 117,850,608.14/9,253.68
  6. Step 6: Final answer
    x = 12,735.54

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Half scale
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Double scale
Find fourth proportional to 9,254.68, 12,857.06 and 9,168.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.