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Finding the Fourth Proportional to 18,083.85, 27,103.90 and 9,313.98

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Solution

The fourth proportional to 18,083.85, 27,103.90 and 9,313.98 is: 13,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,083.85 : 27,103.90 = 9,313.98 : x
  2. Step 2: Convert to fraction form
    18,083.85/27,103.90 = 9,313.98/x
  3. Step 3: Cross multiply
    18,083.85x = 27,103.90 × 9,313.98
  4. Step 4: Simplify right side
    18,083.85x = 252,445,000.43
  5. Step 5: Solve for x
    x = 252,445,000.43/18,083.85
  6. Step 6: Final answer
    x = 13,959.70

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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.