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Finding the Fourth Proportional to 18,667, 25,760.46 and 10,285.12

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Solution

The fourth proportional to 18,667, 25,760.46 and 10,285.12 is: 14,193.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667 : 25,760.46 = 10,285.12 : x
  2. Step 2: Convert to fraction form
    18,667/25,760.46 = 10,285.12/x
  3. Step 3: Cross multiply
    18,667x = 25,760.46 × 10,285.12
  4. Step 4: Simplify right side
    18,667x = 264,949,422.36
  5. Step 5: Solve for x
    x = 264,949,422.36/18,667
  6. Step 6: Final answer
    x = 14,193.47

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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.