Home / 20,146.46-30,219.60-7,663.56

Finding the Fourth Proportional to 20,146.46, 30,219.60 and 7,663.56

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Solution

The fourth proportional to 20,146.46, 30,219.60 and 7,663.56 is: 11,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.46 : 30,219.60 = 7,663.56 : x
  2. Step 2: Convert to fraction form
    20,146.46/30,219.60 = 7,663.56/x
  3. Step 3: Cross multiply
    20,146.46x = 30,219.60 × 7,663.56
  4. Step 4: Simplify right side
    20,146.46x = 231,589,717.78
  5. Step 5: Solve for x
    x = 231,589,717.78/20,146.46
  6. Step 6: Final answer
    x = 11,495.31

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1.5x scale

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.