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Finding the Fourth Proportional to 18,549.64, 27,833.60 and 8,689.60

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Solution

The fourth proportional to 18,549.64, 27,833.60 and 8,689.60 is: 13,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,549.64 : 27,833.60 = 8,689.60 : x
  2. Step 2: Convert to fraction form
    18,549.64/27,833.60 = 8,689.60/x
  3. Step 3: Cross multiply
    18,549.64x = 27,833.60 × 8,689.60
  4. Step 4: Simplify right side
    18,549.64x = 241,862,850.56
  5. Step 5: Solve for x
    x = 241,862,850.56/18,549.64
  6. Step 6: Final answer
    x = 13,038.68

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1.5x scale

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.