Home / 20,091.80-30,108.54-11,307.96

Finding the Fourth Proportional to 20,091.80, 30,108.54 and 11,307.96

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Solution

The fourth proportional to 20,091.80, 30,108.54 and 11,307.96 is: 16,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.80 : 30,108.54 = 11,307.96 : x
  2. Step 2: Convert to fraction form
    20,091.80/30,108.54 = 11,307.96/x
  3. Step 3: Cross multiply
    20,091.80x = 30,108.54 × 11,307.96
  4. Step 4: Simplify right side
    20,091.80x = 340,466,208.38
  5. Step 5: Solve for x
    x = 340,466,208.38/20,091.80
  6. Step 6: Final answer
    x = 16,945.53

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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.