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Finding the Fourth Proportional to 28,708.88, 43,081.56 and 14,857.88

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Solution

The fourth proportional to 28,708.88, 43,081.56 and 14,857.88 is: 22,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.88 : 43,081.56 = 14,857.88 : x
  2. Step 2: Convert to fraction form
    28,708.88/43,081.56 = 14,857.88/x
  3. Step 3: Cross multiply
    28,708.88x = 43,081.56 × 14,857.88
  4. Step 4: Simplify right side
    28,708.88x = 640,100,433.29
  5. Step 5: Solve for x
    x = 640,100,433.29/28,708.88
  6. Step 6: Final answer
    x = 22,296.26

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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.