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Finding the Fourth Proportional to 18,665.95, 25,759.01 and 10,282.45

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Solution

The fourth proportional to 18,665.95, 25,759.01 and 10,282.45 is: 14,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.95 : 25,759.01 = 10,282.45 : x
  2. Step 2: Convert to fraction form
    18,665.95/25,759.01 = 10,282.45/x
  3. Step 3: Cross multiply
    18,665.95x = 25,759.01 × 10,282.45
  4. Step 4: Simplify right side
    18,665.95x = 264,865,732.37
  5. Step 5: Solve for x
    x = 264,865,732.37/18,665.95
  6. Step 6: Final answer
    x = 14,189.78

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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.