Home / 18,687.43-25,899.97-18,337.51

Finding the Fourth Proportional to 18,687.43, 25,899.97 and 18,337.51

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Solution

The fourth proportional to 18,687.43, 25,899.97 and 18,337.51 is: 25,414.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.43 : 25,899.97 = 18,337.51 : x
  2. Step 2: Convert to fraction form
    18,687.43/25,899.97 = 18,337.51/x
  3. Step 3: Cross multiply
    18,687.43x = 25,899.97 × 18,337.51
  4. Step 4: Simplify right side
    18,687.43x = 474,940,848.28
  5. Step 5: Solve for x
    x = 474,940,848.28/18,687.43
  6. Step 6: Final answer
    x = 25,414.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.