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Finding the Fourth Proportional to 18,374.40, 25,354.56 and 10,415.04

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Solution

The fourth proportional to 18,374.40, 25,354.56 and 10,415.04 is: 14,371.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.40 : 25,354.56 = 10,415.04 : x
  2. Step 2: Convert to fraction form
    18,374.40/25,354.56 = 10,415.04/x
  3. Step 3: Cross multiply
    18,374.40x = 25,354.56 × 10,415.04
  4. Step 4: Simplify right side
    18,374.40x = 264,068,756.58
  5. Step 5: Solve for x
    x = 264,068,756.58/18,374.40
  6. Step 6: Final answer
    x = 14,371.56

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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.