Home / 18,786.87-25,914.15-12,081.24

Finding the Fourth Proportional to 18,786.87, 25,914.15 and 12,081.24

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Solution

The fourth proportional to 18,786.87, 25,914.15 and 12,081.24 is: 16,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.87 : 25,914.15 = 12,081.24 : x
  2. Step 2: Convert to fraction form
    18,786.87/25,914.15 = 12,081.24/x
  3. Step 3: Cross multiply
    18,786.87x = 25,914.15 × 12,081.24
  4. Step 4: Simplify right side
    18,786.87x = 313,075,065.55
  5. Step 5: Solve for x
    x = 313,075,065.55/18,786.87
  6. Step 6: Final answer
    x = 16,664.57

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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.