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Finding the Fourth Proportional to 9,042.60, 13,272.21 and 9,042.60

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Solution

The fourth proportional to 9,042.60, 13,272.21 and 9,042.60 is: 13,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042.60 : 13,272.21 = 9,042.60 : x
  2. Step 2: Convert to fraction form
    9,042.60/13,272.21 = 9,042.60/x
  3. Step 3: Cross multiply
    9,042.60x = 13,272.21 × 9,042.60
  4. Step 4: Simplify right side
    9,042.60x = 120,015,286.15
  5. Step 5: Solve for x
    x = 120,015,286.15/9,042.60
  6. Step 6: Final answer
    x = 13,272.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.