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Finding the Fourth Proportional to 18,039.45, 27,060.54 and 4,891.65

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Solution

The fourth proportional to 18,039.45, 27,060.54 and 4,891.65 is: 7,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.45 : 27,060.54 = 4,891.65 : x
  2. Step 2: Convert to fraction form
    18,039.45/27,060.54 = 4,891.65/x
  3. Step 3: Cross multiply
    18,039.45x = 27,060.54 × 4,891.65
  4. Step 4: Simplify right side
    18,039.45x = 132,370,690.49
  5. Step 5: Solve for x
    x = 132,370,690.49/18,039.45
  6. Step 6: Final answer
    x = 7,337.85

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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.