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Finding the Fourth Proportional to 20,506.20, 28,302.48 and 12,010.20

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Solution

The fourth proportional to 20,506.20, 28,302.48 and 12,010.20 is: 16,576.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.20 : 28,302.48 = 12,010.20 : x
  2. Step 2: Convert to fraction form
    20,506.20/28,302.48 = 12,010.20/x
  3. Step 3: Cross multiply
    20,506.20x = 28,302.48 × 12,010.20
  4. Step 4: Simplify right side
    20,506.20x = 339,918,445.30
  5. Step 5: Solve for x
    x = 339,918,445.30/20,506.20
  6. Step 6: Final answer
    x = 16,576.37

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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.