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Finding the Fourth Proportional to 34,443.60, 51,652.60 and 13,662.80

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Solution

The fourth proportional to 34,443.60, 51,652.60 and 13,662.80 is: 20,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,443.60 : 51,652.60 = 13,662.80 : x
  2. Step 2: Convert to fraction form
    34,443.60/51,652.60 = 13,662.80/x
  3. Step 3: Cross multiply
    34,443.60x = 51,652.60 × 13,662.80
  4. Step 4: Simplify right side
    34,443.60x = 705,719,143.28
  5. Step 5: Solve for x
    x = 705,719,143.28/34,443.60
  6. Step 6: Final answer
    x = 20,489.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.