Home / 30,221.40-41,703.48-16,791.60

Finding the Fourth Proportional to 30,221.40, 41,703.48 and 16,791.60

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Solution

The fourth proportional to 30,221.40, 41,703.48 and 16,791.60 is: 23,171.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.40 : 41,703.48 = 16,791.60 : x
  2. Step 2: Convert to fraction form
    30,221.40/41,703.48 = 16,791.60/x
  3. Step 3: Cross multiply
    30,221.40x = 41,703.48 × 16,791.60
  4. Step 4: Simplify right side
    30,221.40x = 700,268,154.77
  5. Step 5: Solve for x
    x = 700,268,154.77/30,221.40
  6. Step 6: Final answer
    x = 23,171.27

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1.5x scale

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.