Home / 19,789.29-27,311.28-11,727.75

Finding the Fourth Proportional to 19,789.29, 27,311.28 and 11,727.75

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Solution

The fourth proportional to 19,789.29, 27,311.28 and 11,727.75 is: 16,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.29 : 27,311.28 = 11,727.75 : x
  2. Step 2: Convert to fraction form
    19,789.29/27,311.28 = 11,727.75/x
  3. Step 3: Cross multiply
    19,789.29x = 27,311.28 × 11,727.75
  4. Step 4: Simplify right side
    19,789.29x = 320,299,864.02
  5. Step 5: Solve for x
    x = 320,299,864.02/19,789.29
  6. Step 6: Final answer
    x = 16,185.52

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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.