Home / 19,683.81-27,159.44-11,728.67

Finding the Fourth Proportional to 19,683.81, 27,159.44 and 11,728.67

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Solution

The fourth proportional to 19,683.81, 27,159.44 and 11,728.67 is: 16,183.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.81 : 27,159.44 = 11,728.67 : x
  2. Step 2: Convert to fraction form
    19,683.81/27,159.44 = 11,728.67/x
  3. Step 3: Cross multiply
    19,683.81x = 27,159.44 × 11,728.67
  4. Step 4: Simplify right side
    19,683.81x = 318,543,914.70
  5. Step 5: Solve for x
    x = 318,543,914.70/19,683.81
  6. Step 6: Final answer
    x = 16,183.04

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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.