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Finding the Fourth Proportional to 28,530.96, 42,796.44 and 7,757.52

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Solution

The fourth proportional to 28,530.96, 42,796.44 and 7,757.52 is: 11,636.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.96 : 42,796.44 = 7,757.52 : x
  2. Step 2: Convert to fraction form
    28,530.96/42,796.44 = 7,757.52/x
  3. Step 3: Cross multiply
    28,530.96x = 42,796.44 × 7,757.52
  4. Step 4: Simplify right side
    28,530.96x = 331,994,239.23
  5. Step 5: Solve for x
    x = 331,994,239.23/28,530.96
  6. Step 6: Final answer
    x = 11,636.28

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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.