Home / 13,832.72-20,721.36-13,105.92

Finding the Fourth Proportional to 13,832.72, 20,721.36 and 13,105.92

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Solution

The fourth proportional to 13,832.72, 20,721.36 and 13,105.92 is: 19,632.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,832.72 : 20,721.36 = 13,105.92 : x
  2. Step 2: Convert to fraction form
    13,832.72/20,721.36 = 13,105.92/x
  3. Step 3: Cross multiply
    13,832.72x = 20,721.36 × 13,105.92
  4. Step 4: Simplify right side
    13,832.72x = 271,572,486.45
  5. Step 5: Solve for x
    x = 271,572,486.45/13,832.72
  6. Step 6: Final answer
    x = 19,632.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.