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Finding the Fourth Proportional to 28,708.09, 43,043.62 and 13,707.09

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Solution

The fourth proportional to 28,708.09, 43,043.62 and 13,707.09 is: 20,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.09 : 43,043.62 = 13,707.09 : x
  2. Step 2: Convert to fraction form
    28,708.09/43,043.62 = 13,707.09/x
  3. Step 3: Cross multiply
    28,708.09x = 43,043.62 × 13,707.09
  4. Step 4: Simplify right side
    28,708.09x = 590,002,704.73
  5. Step 5: Solve for x
    x = 590,002,704.73/28,708.09
  6. Step 6: Final answer
    x = 20,551.80

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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.