Home / 18,815.22-25,969.41-13,786.74

Finding the Fourth Proportional to 18,815.22, 25,969.41 and 13,786.74

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Solution

The fourth proportional to 18,815.22, 25,969.41 and 13,786.74 is: 19,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.22 : 25,969.41 = 13,786.74 : x
  2. Step 2: Convert to fraction form
    18,815.22/25,969.41 = 13,786.74/x
  3. Step 3: Cross multiply
    18,815.22x = 25,969.41 × 13,786.74
  4. Step 4: Simplify right side
    18,815.22x = 358,033,503.62
  5. Step 5: Solve for x
    x = 358,033,503.62/18,815.22
  6. Step 6: Final answer
    x = 19,028.93

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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.