Home / 20,774.88-28,669.68-11,343.84

Finding the Fourth Proportional to 20,774.88, 28,669.68 and 11,343.84

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Solution

The fourth proportional to 20,774.88, 28,669.68 and 11,343.84 is: 15,654.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.88 : 28,669.68 = 11,343.84 : x
  2. Step 2: Convert to fraction form
    20,774.88/28,669.68 = 11,343.84/x
  3. Step 3: Cross multiply
    20,774.88x = 28,669.68 × 11,343.84
  4. Step 4: Simplify right side
    20,774.88x = 325,224,262.77
  5. Step 5: Solve for x
    x = 325,224,262.77/20,774.88
  6. Step 6: Final answer
    x = 15,654.69

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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.