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Finding the Fourth Proportional to 18,469.96, 25,485.12 and 10,511.70

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Solution

The fourth proportional to 18,469.96, 25,485.12 and 10,511.70 is: 14,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.96 : 25,485.12 = 10,511.70 : x
  2. Step 2: Convert to fraction form
    18,469.96/25,485.12 = 10,511.70/x
  3. Step 3: Cross multiply
    18,469.96x = 25,485.12 × 10,511.70
  4. Step 4: Simplify right side
    18,469.96x = 267,891,935.90
  5. Step 5: Solve for x
    x = 267,891,935.90/18,469.96
  6. Step 6: Final answer
    x = 14,504.20

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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.