Home / 30,115.44-45,161.82-21,770.19

Finding the Fourth Proportional to 30,115.44, 45,161.82 and 21,770.19

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Solution

The fourth proportional to 30,115.44, 45,161.82 and 21,770.19 is: 32,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.44 : 45,161.82 = 21,770.19 : x
  2. Step 2: Convert to fraction form
    30,115.44/45,161.82 = 21,770.19/x
  3. Step 3: Cross multiply
    30,115.44x = 45,161.82 × 21,770.19
  4. Step 4: Simplify right side
    30,115.44x = 983,181,402.15
  5. Step 5: Solve for x
    x = 983,181,402.15/30,115.44
  6. Step 6: Final answer
    x = 32,647.09

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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.