Home / 30,919.24-42,668.22-16,771.96

Finding the Fourth Proportional to 30,919.24, 42,668.22 and 16,771.96

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Solution

The fourth proportional to 30,919.24, 42,668.22 and 16,771.96 is: 23,145.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.24 : 42,668.22 = 16,771.96 : x
  2. Step 2: Convert to fraction form
    30,919.24/42,668.22 = 16,771.96/x
  3. Step 3: Cross multiply
    30,919.24x = 42,668.22 × 16,771.96
  4. Step 4: Simplify right side
    30,919.24x = 715,629,679.11
  5. Step 5: Solve for x
    x = 715,629,679.11/30,919.24
  6. Step 6: Final answer
    x = 23,145.13

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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.