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Finding the Fourth Proportional to 18,637.75, 25,720.10 and 10,254.25

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Solution

The fourth proportional to 18,637.75, 25,720.10 and 10,254.25 is: 14,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.75 : 25,720.10 = 10,254.25 : x
  2. Step 2: Convert to fraction form
    18,637.75/25,720.10 = 10,254.25/x
  3. Step 3: Cross multiply
    18,637.75x = 25,720.10 × 10,254.25
  4. Step 4: Simplify right side
    18,637.75x = 263,740,335.43
  5. Step 5: Solve for x
    x = 263,740,335.43/18,637.75
  6. Step 6: Final answer
    x = 14,150.87

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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.