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Finding the Fourth Proportional to 18,411.58, 25,408.65 and 10,453.60

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Solution

The fourth proportional to 18,411.58, 25,408.65 and 10,453.60 is: 14,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.58 : 25,408.65 = 10,453.60 : x
  2. Step 2: Convert to fraction form
    18,411.58/25,408.65 = 10,453.60/x
  3. Step 3: Cross multiply
    18,411.58x = 25,408.65 × 10,453.60
  4. Step 4: Simplify right side
    18,411.58x = 265,611,863.64
  5. Step 5: Solve for x
    x = 265,611,863.64/18,411.58
  6. Step 6: Final answer
    x = 14,426.35

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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.