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Finding the Fourth Proportional to 20,466.57, 28,242.18 and 11,512.29

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Solution

The fourth proportional to 20,466.57, 28,242.18 and 11,512.29 is: 15,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.57 : 28,242.18 = 11,512.29 : x
  2. Step 2: Convert to fraction form
    20,466.57/28,242.18 = 11,512.29/x
  3. Step 3: Cross multiply
    20,466.57x = 28,242.18 × 11,512.29
  4. Step 4: Simplify right side
    20,466.57x = 325,132,166.39
  5. Step 5: Solve for x
    x = 325,132,166.39/20,466.57
  6. Step 6: Final answer
    x = 15,886.01

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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.