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Finding the Fourth Proportional to 18,571.52, 27,855.94 and 8,713.04

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Solution

The fourth proportional to 18,571.52, 27,855.94 and 8,713.04 is: 13,068.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.52 : 27,855.94 = 8,713.04 : x
  2. Step 2: Convert to fraction form
    18,571.52/27,855.94 = 8,713.04/x
  3. Step 3: Cross multiply
    18,571.52x = 27,855.94 × 8,713.04
  4. Step 4: Simplify right side
    18,571.52x = 242,709,919.46
  5. Step 5: Solve for x
    x = 242,709,919.46/18,571.52
  6. Step 6: Final answer
    x = 13,068.93

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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.