Home / 19,719.72-27,219.24-12,168.36

Finding the Fourth Proportional to 19,719.72, 27,219.24 and 12,168.36

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Solution

The fourth proportional to 19,719.72, 27,219.24 and 12,168.36 is: 16,796.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.72 : 27,219.24 = 12,168.36 : x
  2. Step 2: Convert to fraction form
    19,719.72/27,219.24 = 12,168.36/x
  3. Step 3: Cross multiply
    19,719.72x = 27,219.24 × 12,168.36
  4. Step 4: Simplify right side
    19,719.72x = 331,213,511.25
  5. Step 5: Solve for x
    x = 331,213,511.25/19,719.72
  6. Step 6: Final answer
    x = 16,796.06

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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.