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Finding the Fourth Proportional to 28,990.92, 43,489.80 and 10,267.05

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Solution

The fourth proportional to 28,990.92, 43,489.80 and 10,267.05 is: 15,401.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.92 : 43,489.80 = 10,267.05 : x
  2. Step 2: Convert to fraction form
    28,990.92/43,489.80 = 10,267.05/x
  3. Step 3: Cross multiply
    28,990.92x = 43,489.80 × 10,267.05
  4. Step 4: Simplify right side
    28,990.92x = 446,511,951.09
  5. Step 5: Solve for x
    x = 446,511,951.09/28,990.92
  6. Step 6: Final answer
    x = 15,401.79

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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.