Home / 20,104.33-30,156.69-7,621

Finding the Fourth Proportional to 20,104.33, 30,156.69 and 7,621

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Solution

The fourth proportional to 20,104.33, 30,156.69 and 7,621 is: 11,431.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.33 : 30,156.69 = 7,621 : x
  2. Step 2: Convert to fraction form
    20,104.33/30,156.69 = 7,621/x
  3. Step 3: Cross multiply
    20,104.33x = 30,156.69 × 7,621
  4. Step 4: Simplify right side
    20,104.33x = 229,824,134.49
  5. Step 5: Solve for x
    x = 229,824,134.49/20,104.33
  6. Step 6: Final answer
    x = 11,431.57

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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.