Home / 21,150.10-29,188.32-12,078.14

Finding the Fourth Proportional to 21,150.10, 29,188.32 and 12,078.14

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Solution

The fourth proportional to 21,150.10, 29,188.32 and 12,078.14 is: 16,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.10 : 29,188.32 = 12,078.14 : x
  2. Step 2: Convert to fraction form
    21,150.10/29,188.32 = 12,078.14/x
  3. Step 3: Cross multiply
    21,150.10x = 29,188.32 × 12,078.14
  4. Step 4: Simplify right side
    21,150.10x = 352,540,615.32
  5. Step 5: Solve for x
    x = 352,540,615.32/21,150.10
  6. Step 6: Final answer
    x = 16,668.51

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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.