Home / 30,761.28-42,450.96-18,186

Finding the Fourth Proportional to 30,761.28, 42,450.96 and 18,186

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Solution

The fourth proportional to 30,761.28, 42,450.96 and 18,186 is: 25,096.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,761.28 : 42,450.96 = 18,186 : x
  2. Step 2: Convert to fraction form
    30,761.28/42,450.96 = 18,186/x
  3. Step 3: Cross multiply
    30,761.28x = 42,450.96 × 18,186
  4. Step 4: Simplify right side
    30,761.28x = 772,013,158.56
  5. Step 5: Solve for x
    x = 772,013,158.56/30,761.28
  6. Step 6: Final answer
    x = 25,096.91

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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.