Home / 30,631.70-45,945.84-8,141.78

Finding the Fourth Proportional to 30,631.70, 45,945.84 and 8,141.78

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Solution

The fourth proportional to 30,631.70, 45,945.84 and 8,141.78 is: 12,212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.70 : 45,945.84 = 8,141.78 : x
  2. Step 2: Convert to fraction form
    30,631.70/45,945.84 = 8,141.78/x
  3. Step 3: Cross multiply
    30,631.70x = 45,945.84 × 8,141.78
  4. Step 4: Simplify right side
    30,631.70x = 374,080,921.20
  5. Step 5: Solve for x
    x = 374,080,921.20/30,631.70
  6. Step 6: Final answer
    x = 12,212.22

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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.