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Finding the Fourth Proportional to 28,979.91, 43,489.35 and 10,259.88

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Solution

The fourth proportional to 28,979.91, 43,489.35 and 10,259.88 is: 15,396.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.91 : 43,489.35 = 10,259.88 : x
  2. Step 2: Convert to fraction form
    28,979.91/43,489.35 = 10,259.88/x
  3. Step 3: Cross multiply
    28,979.91x = 43,489.35 × 10,259.88
  4. Step 4: Simplify right side
    28,979.91x = 446,195,512.28
  5. Step 5: Solve for x
    x = 446,195,512.28/28,979.91
  6. Step 6: Final answer
    x = 15,396.72

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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.