Home / 19,665.10-27,138.41-11,166.92

Finding the Fourth Proportional to 19,665.10, 27,138.41 and 11,166.92

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Solution

The fourth proportional to 19,665.10, 27,138.41 and 11,166.92 is: 15,410.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.10 : 27,138.41 = 11,166.92 : x
  2. Step 2: Convert to fraction form
    19,665.10/27,138.41 = 11,166.92/x
  3. Step 3: Cross multiply
    19,665.10x = 27,138.41 × 11,166.92
  4. Step 4: Simplify right side
    19,665.10x = 303,052,453.40
  5. Step 5: Solve for x
    x = 303,052,453.40/19,665.10
  6. Step 6: Final answer
    x = 15,410.67

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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.