Home / 20,774.97-28,670.49-11,343.47

Finding the Fourth Proportional to 20,774.97, 28,670.49 and 11,343.47

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Solution

The fourth proportional to 20,774.97, 28,670.49 and 11,343.47 is: 15,654.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.97 : 28,670.49 = 11,343.47 : x
  2. Step 2: Convert to fraction form
    20,774.97/28,670.49 = 11,343.47/x
  3. Step 3: Cross multiply
    20,774.97x = 28,670.49 × 11,343.47
  4. Step 4: Simplify right side
    20,774.97x = 325,222,699.85
  5. Step 5: Solve for x
    x = 325,222,699.85/20,774.97
  6. Step 6: Final answer
    x = 15,654.54

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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.