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Finding the Fourth Proportional to 18,445.60, 25,456.44 and 10,490.32

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Solution

The fourth proportional to 18,445.60, 25,456.44 and 10,490.32 is: 14,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.60 : 25,456.44 = 10,490.32 : x
  2. Step 2: Convert to fraction form
    18,445.60/25,456.44 = 10,490.32/x
  3. Step 3: Cross multiply
    18,445.60x = 25,456.44 × 10,490.32
  4. Step 4: Simplify right side
    18,445.60x = 267,046,201.66
  5. Step 5: Solve for x
    x = 267,046,201.66/18,445.60
  6. Step 6: Final answer
    x = 14,477.50

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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.