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Finding the Fourth Proportional to 18,163.50, 25,061.20 and 10,605.49

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Solution

The fourth proportional to 18,163.50, 25,061.20 and 10,605.49 is: 14,632.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.50 : 25,061.20 = 10,605.49 : x
  2. Step 2: Convert to fraction form
    18,163.50/25,061.20 = 10,605.49/x
  3. Step 3: Cross multiply
    18,163.50x = 25,061.20 × 10,605.49
  4. Step 4: Simplify right side
    18,163.50x = 265,786,305.99
  5. Step 5: Solve for x
    x = 265,786,305.99/18,163.50
  6. Step 6: Final answer
    x = 14,632.99

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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.