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Finding the Fourth Proportional to 28,775.62, 43,163.18 and 7,999.06

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Solution

The fourth proportional to 28,775.62, 43,163.18 and 7,999.06 is: 11,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775.62 : 43,163.18 = 7,999.06 : x
  2. Step 2: Convert to fraction form
    28,775.62/43,163.18 = 7,999.06/x
  3. Step 3: Cross multiply
    28,775.62x = 43,163.18 × 7,999.06
  4. Step 4: Simplify right side
    28,775.62x = 345,264,866.61
  5. Step 5: Solve for x
    x = 345,264,866.61/28,775.62
  6. Step 6: Final answer
    x = 11,998.52

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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.