Home / 20,108-30,157.82-7,623.72

Finding the Fourth Proportional to 20,108, 30,157.82 and 7,623.72

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Solution

The fourth proportional to 20,108, 30,157.82 and 7,623.72 is: 11,434.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108 : 30,157.82 = 7,623.72 : x
  2. Step 2: Convert to fraction form
    20,108/30,157.82 = 7,623.72/x
  3. Step 3: Cross multiply
    20,108x = 30,157.82 × 7,623.72
  4. Step 4: Simplify right side
    20,108x = 229,914,775.49
  5. Step 5: Solve for x
    x = 229,914,775.49/20,108
  6. Step 6: Final answer
    x = 11,434.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.