Home / 20,774.32-28,668.56-11,342.89

Finding the Fourth Proportional to 20,774.32, 28,668.56 and 11,342.89

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Solution

The fourth proportional to 20,774.32, 28,668.56 and 11,342.89 is: 15,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.32 : 28,668.56 = 11,342.89 : x
  2. Step 2: Convert to fraction form
    20,774.32/28,668.56 = 11,342.89/x
  3. Step 3: Cross multiply
    20,774.32x = 28,668.56 × 11,342.89
  4. Step 4: Simplify right side
    20,774.32x = 325,184,322.54
  5. Step 5: Solve for x
    x = 325,184,322.54/20,774.32
  6. Step 6: Final answer
    x = 15,653.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.