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Finding the Fourth Proportional to 28,951.39, 43,421.01 and 8,170.03

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Solution

The fourth proportional to 28,951.39, 43,421.01 and 8,170.03 is: 12,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.39 : 43,421.01 = 8,170.03 : x
  2. Step 2: Convert to fraction form
    28,951.39/43,421.01 = 8,170.03/x
  3. Step 3: Cross multiply
    28,951.39x = 43,421.01 × 8,170.03
  4. Step 4: Simplify right side
    28,951.39x = 354,751,023.93
  5. Step 5: Solve for x
    x = 354,751,023.93/28,951.39
  6. Step 6: Final answer
    x = 12,253.33

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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.