Home / 12,165.40-18,233.70-9,083.80

Finding the Fourth Proportional to 12,165.40, 18,233.70 and 9,083.80

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Solution

The fourth proportional to 12,165.40, 18,233.70 and 9,083.80 is: 13,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.40 : 18,233.70 = 9,083.80 : x
  2. Step 2: Convert to fraction form
    12,165.40/18,233.70 = 9,083.80/x
  3. Step 3: Cross multiply
    12,165.40x = 18,233.70 × 9,083.80
  4. Step 4: Simplify right side
    12,165.40x = 165,631,284.06
  5. Step 5: Solve for x
    x = 165,631,284.06/12,165.40
  6. Step 6: Final answer
    x = 13,614.95

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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.