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Finding the Fourth Proportional to 18,706.02, 28,042.60 and 7,622.03

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Solution

The fourth proportional to 18,706.02, 28,042.60 and 7,622.03 is: 11,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.02 : 28,042.60 = 7,622.03 : x
  2. Step 2: Convert to fraction form
    18,706.02/28,042.60 = 7,622.03/x
  3. Step 3: Cross multiply
    18,706.02x = 28,042.60 × 7,622.03
  4. Step 4: Simplify right side
    18,706.02x = 213,741,538.48
  5. Step 5: Solve for x
    x = 213,741,538.48/18,706.02
  6. Step 6: Final answer
    x = 11,426.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.