Home / 30,919.02-42,668.48-16,771.86

Finding the Fourth Proportional to 30,919.02, 42,668.48 and 16,771.86

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Solution

The fourth proportional to 30,919.02, 42,668.48 and 16,771.86 is: 23,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.02 : 42,668.48 = 16,771.86 : x
  2. Step 2: Convert to fraction form
    30,919.02/42,668.48 = 16,771.86/x
  3. Step 3: Cross multiply
    30,919.02x = 42,668.48 × 16,771.86
  4. Step 4: Simplify right side
    30,919.02x = 715,629,772.97
  5. Step 5: Solve for x
    x = 715,629,772.97/30,919.02
  6. Step 6: Final answer
    x = 23,145.29

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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.