Home / 30,390.11-41,942.31-16,964.15

Finding the Fourth Proportional to 30,390.11, 41,942.31 and 16,964.15

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Solution

The fourth proportional to 30,390.11, 41,942.31 and 16,964.15 is: 23,412.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.11 : 41,942.31 = 16,964.15 : x
  2. Step 2: Convert to fraction form
    30,390.11/41,942.31 = 16,964.15/x
  3. Step 3: Cross multiply
    30,390.11x = 41,942.31 × 16,964.15
  4. Step 4: Simplify right side
    30,390.11x = 711,515,531.19
  5. Step 5: Solve for x
    x = 711,515,531.19/30,390.11
  6. Step 6: Final answer
    x = 23,412.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.