Home / 20,250.63-30,372.87-7,776.53

Finding the Fourth Proportional to 20,250.63, 30,372.87 and 7,776.53

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Solution

The fourth proportional to 20,250.63, 30,372.87 and 7,776.53 is: 11,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.63 : 30,372.87 = 7,776.53 : x
  2. Step 2: Convert to fraction form
    20,250.63/30,372.87 = 7,776.53/x
  3. Step 3: Cross multiply
    20,250.63x = 30,372.87 × 7,776.53
  4. Step 4: Simplify right side
    20,250.63x = 236,195,545.75
  5. Step 5: Solve for x
    x = 236,195,545.75/20,250.63
  6. Step 6: Final answer
    x = 11,663.61

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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.