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Finding the Fourth Proportional to 18,353.79, 25,338.72 and 12,084.39

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Solution

The fourth proportional to 18,353.79, 25,338.72 and 12,084.39 is: 16,683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.79 : 25,338.72 = 12,084.39 : x
  2. Step 2: Convert to fraction form
    18,353.79/25,338.72 = 12,084.39/x
  3. Step 3: Cross multiply
    18,353.79x = 25,338.72 × 12,084.39
  4. Step 4: Simplify right side
    18,353.79x = 306,202,974.58
  5. Step 5: Solve for x
    x = 306,202,974.58/18,353.79
  6. Step 6: Final answer
    x = 16,683.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.