Home / 19,940.20-27,517.79-10,987.67

Finding the Fourth Proportional to 19,940.20, 27,517.79 and 10,987.67

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Solution

The fourth proportional to 19,940.20, 27,517.79 and 10,987.67 is: 15,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.20 : 27,517.79 = 10,987.67 : x
  2. Step 2: Convert to fraction form
    19,940.20/27,517.79 = 10,987.67/x
  3. Step 3: Cross multiply
    19,940.20x = 27,517.79 × 10,987.67
  4. Step 4: Simplify right side
    19,940.20x = 302,356,395.65
  5. Step 5: Solve for x
    x = 302,356,395.65/19,940.20
  6. Step 6: Final answer
    x = 15,163.16

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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.