Home / 13,992.75-20,980.62-5,665.95

Finding the Fourth Proportional to 13,992.75, 20,980.62 and 5,665.95

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Solution

The fourth proportional to 13,992.75, 20,980.62 and 5,665.95 is: 8,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.75 : 20,980.62 = 5,665.95 : x
  2. Step 2: Convert to fraction form
    13,992.75/20,980.62 = 5,665.95/x
  3. Step 3: Cross multiply
    13,992.75x = 20,980.62 × 5,665.95
  4. Step 4: Simplify right side
    13,992.75x = 118,875,143.89
  5. Step 5: Solve for x
    x = 118,875,143.89/13,992.75
  6. Step 6: Final answer
    x = 8,495.48

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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.