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Finding the Fourth Proportional to 18,631.03, 25,708.86 and 11,461.32

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Solution

The fourth proportional to 18,631.03, 25,708.86 and 11,461.32 is: 15,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.03 : 25,708.86 = 11,461.32 : x
  2. Step 2: Convert to fraction form
    18,631.03/25,708.86 = 11,461.32/x
  3. Step 3: Cross multiply
    18,631.03x = 25,708.86 × 11,461.32
  4. Step 4: Simplify right side
    18,631.03x = 294,657,471.30
  5. Step 5: Solve for x
    x = 294,657,471.30/18,631.03
  6. Step 6: Final answer
    x = 15,815.41

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