Home / 20,134.08-27,782.82-11,520.36

Finding the Fourth Proportional to 20,134.08, 27,782.82 and 11,520.36

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Solution

The fourth proportional to 20,134.08, 27,782.82 and 11,520.36 is: 15,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.08 : 27,782.82 = 11,520.36 : x
  2. Step 2: Convert to fraction form
    20,134.08/27,782.82 = 11,520.36/x
  3. Step 3: Cross multiply
    20,134.08x = 27,782.82 × 11,520.36
  4. Step 4: Simplify right side
    20,134.08x = 320,068,088.22
  5. Step 5: Solve for x
    x = 320,068,088.22/20,134.08
  6. Step 6: Final answer
    x = 15,896.83

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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.