Home / 43,974.73-65,971.95-13,990.69

Finding the Fourth Proportional to 43,974.73, 65,971.95 and 13,990.69

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Solution

The fourth proportional to 43,974.73, 65,971.95 and 13,990.69 is: 20,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,974.73 : 65,971.95 = 13,990.69 : x
  2. Step 2: Convert to fraction form
    43,974.73/65,971.95 = 13,990.69/x
  3. Step 3: Cross multiply
    43,974.73x = 65,971.95 × 13,990.69
  4. Step 4: Simplify right side
    43,974.73x = 922,993,101.15
  5. Step 5: Solve for x
    x = 922,993,101.15/43,974.73
  6. Step 6: Final answer
    x = 20,989.17

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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.