Home / 20,679.09-28,534.44-11,723.32

Finding the Fourth Proportional to 20,679.09, 28,534.44 and 11,723.32

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Solution

The fourth proportional to 20,679.09, 28,534.44 and 11,723.32 is: 16,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.09 : 28,534.44 = 11,723.32 : x
  2. Step 2: Convert to fraction form
    20,679.09/28,534.44 = 11,723.32/x
  3. Step 3: Cross multiply
    20,679.09x = 28,534.44 × 11,723.32
  4. Step 4: Simplify right side
    20,679.09x = 334,518,371.14
  5. Step 5: Solve for x
    x = 334,518,371.14/20,679.09
  6. Step 6: Final answer
    x = 16,176.65

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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.