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Finding the Fourth Proportional to 18,474.18, 25,515.60 and 13,460.82

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Solution

The fourth proportional to 18,474.18, 25,515.60 and 13,460.82 is: 18,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.18 : 25,515.60 = 13,460.82 : x
  2. Step 2: Convert to fraction form
    18,474.18/25,515.60 = 13,460.82/x
  3. Step 3: Cross multiply
    18,474.18x = 25,515.60 × 13,460.82
  4. Step 4: Simplify right side
    18,474.18x = 343,460,898.79
  5. Step 5: Solve for x
    x = 343,460,898.79/18,474.18
  6. Step 6: Final answer
    x = 18,591.40

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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.