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Finding the Fourth Proportional to 28,779.82, 43,172.10 and 8,003.32

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Solution

The fourth proportional to 28,779.82, 43,172.10 and 8,003.32 is: 12,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.82 : 43,172.10 = 8,003.32 : x
  2. Step 2: Convert to fraction form
    28,779.82/43,172.10 = 8,003.32/x
  3. Step 3: Cross multiply
    28,779.82x = 43,172.10 × 8,003.32
  4. Step 4: Simplify right side
    28,779.82x = 345,520,131.37
  5. Step 5: Solve for x
    x = 345,520,131.37/28,779.82
  6. Step 6: Final answer
    x = 12,005.64

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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.