Home / 20,954.20-31,394.37-11,071.66

Finding the Fourth Proportional to 20,954.20, 31,394.37 and 11,071.66

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Solution

The fourth proportional to 20,954.20, 31,394.37 and 11,071.66 is: 16,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.20 : 31,394.37 = 11,071.66 : x
  2. Step 2: Convert to fraction form
    20,954.20/31,394.37 = 11,071.66/x
  3. Step 3: Cross multiply
    20,954.20x = 31,394.37 × 11,071.66
  4. Step 4: Simplify right side
    20,954.20x = 347,587,790.55
  5. Step 5: Solve for x
    x = 347,587,790.55/20,954.20
  6. Step 6: Final answer
    x = 16,587.98

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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.