Home / 20,743.80-31,091.10-11,960.58

Finding the Fourth Proportional to 20,743.80, 31,091.10 and 11,960.58

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Solution

The fourth proportional to 20,743.80, 31,091.10 and 11,960.58 is: 17,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.80 : 31,091.10 = 11,960.58 : x
  2. Step 2: Convert to fraction form
    20,743.80/31,091.10 = 11,960.58/x
  3. Step 3: Cross multiply
    20,743.80x = 31,091.10 × 11,960.58
  4. Step 4: Simplify right side
    20,743.80x = 371,867,588.84
  5. Step 5: Solve for x
    x = 371,867,588.84/20,743.80
  6. Step 6: Final answer
    x = 17,926.69

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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.