Home / 19,680.66-27,158.32-11,181.67

Finding the Fourth Proportional to 19,680.66, 27,158.32 and 11,181.67

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Solution

The fourth proportional to 19,680.66, 27,158.32 and 11,181.67 is: 15,430.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.66 : 27,158.32 = 11,181.67 : x
  2. Step 2: Convert to fraction form
    19,680.66/27,158.32 = 11,181.67/x
  3. Step 3: Cross multiply
    19,680.66x = 27,158.32 × 11,181.67
  4. Step 4: Simplify right side
    19,680.66x = 303,675,371.99
  5. Step 5: Solve for x
    x = 303,675,371.99/19,680.66
  6. Step 6: Final answer
    x = 15,430.14

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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.