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Finding the Fourth Proportional to 18,563.60, 27,845.40 and 4,712.60

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Solution

The fourth proportional to 18,563.60, 27,845.40 and 4,712.60 is: 7,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.60 : 27,845.40 = 4,712.60 : x
  2. Step 2: Convert to fraction form
    18,563.60/27,845.40 = 4,712.60/x
  3. Step 3: Cross multiply
    18,563.60x = 27,845.40 × 4,712.60
  4. Step 4: Simplify right side
    18,563.60x = 131,224,232.04
  5. Step 5: Solve for x
    x = 131,224,232.04/18,563.60
  6. Step 6: Final answer
    x = 7,068.90

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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.