Home / 19,789.12-27,311.34-11,835.64

Finding the Fourth Proportional to 19,789.12, 27,311.34 and 11,835.64

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Solution

The fourth proportional to 19,789.12, 27,311.34 and 11,835.64 is: 16,334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.12 : 27,311.34 = 11,835.64 : x
  2. Step 2: Convert to fraction form
    19,789.12/27,311.34 = 11,835.64/x
  3. Step 3: Cross multiply
    19,789.12x = 27,311.34 × 11,835.64
  4. Step 4: Simplify right side
    19,789.12x = 323,247,188.16
  5. Step 5: Solve for x
    x = 323,247,188.16/19,789.12
  6. Step 6: Final answer
    x = 16,334.59

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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.