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Finding the Fourth Proportional to 15,431.60, 23,131.20 and 8,843.60

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Solution

The fourth proportional to 15,431.60, 23,131.20 and 8,843.60 is: 13,256.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.60 : 23,131.20 = 8,843.60 : x
  2. Step 2: Convert to fraction form
    15,431.60/23,131.20 = 8,843.60/x
  3. Step 3: Cross multiply
    15,431.60x = 23,131.20 × 8,843.60
  4. Step 4: Simplify right side
    15,431.60x = 204,563,080.32
  5. Step 5: Solve for x
    x = 204,563,080.32/15,431.60
  6. Step 6: Final answer
    x = 13,256.12

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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.