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Finding the Fourth Proportional to 28,768.96, 43,153.68 and 7,994.08

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Solution

The fourth proportional to 28,768.96, 43,153.68 and 7,994.08 is: 11,991.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,768.96 : 43,153.68 = 7,994.08 : x
  2. Step 2: Convert to fraction form
    28,768.96/43,153.68 = 7,994.08/x
  3. Step 3: Cross multiply
    28,768.96x = 43,153.68 × 7,994.08
  4. Step 4: Simplify right side
    28,768.96x = 344,973,970.21
  5. Step 5: Solve for x
    x = 344,973,970.21/28,768.96
  6. Step 6: Final answer
    x = 11,991.19

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Double scale
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Similar ratio
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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.