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Finding the Fourth Proportional to 18,311.64, 25,269.06 and 10,353.39

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Solution

The fourth proportional to 18,311.64, 25,269.06 and 10,353.39 is: 14,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.64 : 25,269.06 = 10,353.39 : x
  2. Step 2: Convert to fraction form
    18,311.64/25,269.06 = 10,353.39/x
  3. Step 3: Cross multiply
    18,311.64x = 25,269.06 × 10,353.39
  4. Step 4: Simplify right side
    18,311.64x = 261,620,433.11
  5. Step 5: Solve for x
    x = 261,620,433.11/18,311.64
  6. Step 6: Final answer
    x = 14,287.11

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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.