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Finding the Fourth Proportional to 18,341.91, 27,520.16 and 8,485.83

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Solution

The fourth proportional to 18,341.91, 27,520.16 and 8,485.83 is: 12,732.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,341.91 : 27,520.16 = 8,485.83 : x
  2. Step 2: Convert to fraction form
    18,341.91/27,520.16 = 8,485.83/x
  3. Step 3: Cross multiply
    18,341.91x = 27,520.16 × 8,485.83
  4. Step 4: Simplify right side
    18,341.91x = 233,531,356.90
  5. Step 5: Solve for x
    x = 233,531,356.90/18,341.91
  6. Step 6: Final answer
    x = 12,732.12

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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.