Home / 18,491.75-25,518.62-9,993.84

Finding the Fourth Proportional to 18,491.75, 25,518.62 and 9,993.84

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Solution

The fourth proportional to 18,491.75, 25,518.62 and 9,993.84 is: 13,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.75 : 25,518.62 = 9,993.84 : x
  2. Step 2: Convert to fraction form
    18,491.75/25,518.62 = 9,993.84/x
  3. Step 3: Cross multiply
    18,491.75x = 25,518.62 × 9,993.84
  4. Step 4: Simplify right side
    18,491.75x = 255,028,955.33
  5. Step 5: Solve for x
    x = 255,028,955.33/18,491.75
  6. Step 6: Final answer
    x = 13,791.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.