Home / 28,433.16-42,664.68-20,166.48

Finding the Fourth Proportional to 28,433.16, 42,664.68 and 20,166.48

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Solution

The fourth proportional to 28,433.16, 42,664.68 and 20,166.48 is: 30,260.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.16 : 42,664.68 = 20,166.48 : x
  2. Step 2: Convert to fraction form
    28,433.16/42,664.68 = 20,166.48/x
  3. Step 3: Cross multiply
    28,433.16x = 42,664.68 × 20,166.48
  4. Step 4: Simplify right side
    28,433.16x = 860,396,415.93
  5. Step 5: Solve for x
    x = 860,396,415.93/28,433.16
  6. Step 6: Final answer
    x = 30,260.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.