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Finding the Fourth Proportional to 28,994.84, 43,489.32 and 7,936.76

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Solution

The fourth proportional to 28,994.84, 43,489.32 and 7,936.76 is: 11,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,994.84 : 43,489.32 = 7,936.76 : x
  2. Step 2: Convert to fraction form
    28,994.84/43,489.32 = 7,936.76/x
  3. Step 3: Cross multiply
    28,994.84x = 43,489.32 × 7,936.76
  4. Step 4: Simplify right side
    28,994.84x = 345,164,295.40
  5. Step 5: Solve for x
    x = 345,164,295.40/28,994.84
  6. Step 6: Final answer
    x = 11,904.34

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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.