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Finding the Fourth Proportional to 18,001.90, 27,001.86 and 5,521.94

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Solution

The fourth proportional to 18,001.90, 27,001.86 and 5,521.94 is: 8,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,001.90 : 27,001.86 = 5,521.94 : x
  2. Step 2: Convert to fraction form
    18,001.90/27,001.86 = 5,521.94/x
  3. Step 3: Cross multiply
    18,001.90x = 27,001.86 × 5,521.94
  4. Step 4: Simplify right side
    18,001.90x = 149,102,650.81
  5. Step 5: Solve for x
    x = 149,102,650.81/18,001.90
  6. Step 6: Final answer
    x = 8,282.61

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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.