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Finding the Fourth Proportional to 18,606.31, 25,662.57 and 12,873.31

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Solution

The fourth proportional to 18,606.31, 25,662.57 and 12,873.31 is: 17,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.31 : 25,662.57 = 12,873.31 : x
  2. Step 2: Convert to fraction form
    18,606.31/25,662.57 = 12,873.31/x
  3. Step 3: Cross multiply
    18,606.31x = 25,662.57 × 12,873.31
  4. Step 4: Simplify right side
    18,606.31x = 330,362,106.58
  5. Step 5: Solve for x
    x = 330,362,106.58/18,606.31
  6. Step 6: Final answer
    x = 17,755.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.