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Finding the Fourth Proportional to 18,706.93, 25,816.17 and 10,640.38

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Solution

The fourth proportional to 18,706.93, 25,816.17 and 10,640.38 is: 14,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.93 : 25,816.17 = 10,640.38 : x
  2. Step 2: Convert to fraction form
    18,706.93/25,816.17 = 10,640.38/x
  3. Step 3: Cross multiply
    18,706.93x = 25,816.17 × 10,640.38
  4. Step 4: Simplify right side
    18,706.93x = 274,693,902.56
  5. Step 5: Solve for x
    x = 274,693,902.56/18,706.93
  6. Step 6: Final answer
    x = 14,684.07

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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.