Home / 36,112.79-54,170.39-12,420.11

Finding the Fourth Proportional to 36,112.79, 54,170.39 and 12,420.11

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Solution

The fourth proportional to 36,112.79, 54,170.39 and 12,420.11 is: 18,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,112.79 : 54,170.39 = 12,420.11 : x
  2. Step 2: Convert to fraction form
    36,112.79/54,170.39 = 12,420.11/x
  3. Step 3: Cross multiply
    36,112.79x = 54,170.39 × 12,420.11
  4. Step 4: Simplify right side
    36,112.79x = 672,802,202.54
  5. Step 5: Solve for x
    x = 672,802,202.54/36,112.79
  6. Step 6: Final answer
    x = 18,630.58

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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.