Home / 20,897.96-28,841.72-11,945.84

Finding the Fourth Proportional to 20,897.96, 28,841.72 and 11,945.84

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Solution

The fourth proportional to 20,897.96, 28,841.72 and 11,945.84 is: 16,486.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.96 : 28,841.72 = 11,945.84 : x
  2. Step 2: Convert to fraction form
    20,897.96/28,841.72 = 11,945.84/x
  3. Step 3: Cross multiply
    20,897.96x = 28,841.72 × 11,945.84
  4. Step 4: Simplify right side
    20,897.96x = 344,538,572.44
  5. Step 5: Solve for x
    x = 344,538,572.44/20,897.96
  6. Step 6: Final answer
    x = 16,486.71

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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.