Home / 18,687.32-25,790.06-10,731.10

Finding the Fourth Proportional to 18,687.32, 25,790.06 and 10,731.10

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Solution

The fourth proportional to 18,687.32, 25,790.06 and 10,731.10 is: 14,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.32 : 25,790.06 = 10,731.10 : x
  2. Step 2: Convert to fraction form
    18,687.32/25,790.06 = 10,731.10/x
  3. Step 3: Cross multiply
    18,687.32x = 25,790.06 × 10,731.10
  4. Step 4: Simplify right side
    18,687.32x = 276,755,712.87
  5. Step 5: Solve for x
    x = 276,755,712.87/18,687.32
  6. Step 6: Final answer
    x = 14,809.81

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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.