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Finding the Fourth Proportional to 12,167.55, 18,269.55 and 8,486.10

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Solution

The fourth proportional to 12,167.55, 18,269.55 and 8,486.10 is: 12,741.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.55 : 18,269.55 = 8,486.10 : x
  2. Step 2: Convert to fraction form
    12,167.55/18,269.55 = 8,486.10/x
  3. Step 3: Cross multiply
    12,167.55x = 18,269.55 × 8,486.10
  4. Step 4: Simplify right side
    12,167.55x = 155,037,228.26
  5. Step 5: Solve for x
    x = 155,037,228.26/12,167.55
  6. Step 6: Final answer
    x = 12,741.86

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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.