Home / 12,309.11-18,459.90-8,092.18

Finding the Fourth Proportional to 12,309.11, 18,459.90 and 8,092.18

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Solution

The fourth proportional to 12,309.11, 18,459.90 and 8,092.18 is: 12,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.11 : 18,459.90 = 8,092.18 : x
  2. Step 2: Convert to fraction form
    12,309.11/18,459.90 = 8,092.18/x
  3. Step 3: Cross multiply
    12,309.11x = 18,459.90 × 8,092.18
  4. Step 4: Simplify right side
    12,309.11x = 149,380,916.16
  5. Step 5: Solve for x
    x = 149,380,916.16/12,309.11
  6. Step 6: Final answer
    x = 12,135.80

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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.