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Finding the Fourth Proportional to 13,755.83, 18,983.04 and 7,468.21

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Solution

The fourth proportional to 13,755.83, 18,983.04 and 7,468.21 is: 10,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.83 : 18,983.04 = 7,468.21 : x
  2. Step 2: Convert to fraction form
    13,755.83/18,983.04 = 7,468.21/x
  3. Step 3: Cross multiply
    13,755.83x = 18,983.04 × 7,468.21
  4. Step 4: Simplify right side
    13,755.83x = 141,769,234.24
  5. Step 5: Solve for x
    x = 141,769,234.24/13,755.83
  6. Step 6: Final answer
    x = 10,306.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.