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Finding the Fourth Proportional to 18,299, 25,249.75 and 10,643.97

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Solution

The fourth proportional to 18,299, 25,249.75 and 10,643.97 is: 14,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299 : 25,249.75 = 10,643.97 : x
  2. Step 2: Convert to fraction form
    18,299/25,249.75 = 10,643.97/x
  3. Step 3: Cross multiply
    18,299x = 25,249.75 × 10,643.97
  4. Step 4: Simplify right side
    18,299x = 268,757,581.51
  5. Step 5: Solve for x
    x = 268,757,581.51/18,299
  6. Step 6: Final answer
    x = 14,687.01

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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.