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Finding the Fourth Proportional to 18,563.89, 27,855.06 and 8,703.93

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Solution

The fourth proportional to 18,563.89, 27,855.06 and 8,703.93 is: 13,060.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.89 : 27,855.06 = 8,703.93 : x
  2. Step 2: Convert to fraction form
    18,563.89/27,855.06 = 8,703.93/x
  3. Step 3: Cross multiply
    18,563.89x = 27,855.06 × 8,703.93
  4. Step 4: Simplify right side
    18,563.89x = 242,448,492.39
  5. Step 5: Solve for x
    x = 242,448,492.39/18,563.89
  6. Step 6: Final answer
    x = 13,060.22

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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.