Home / 19,784.20-27,305.42-11,405.56

Finding the Fourth Proportional to 19,784.20, 27,305.42 and 11,405.56

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Solution

The fourth proportional to 19,784.20, 27,305.42 and 11,405.56 is: 15,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.20 : 27,305.42 = 11,405.56 : x
  2. Step 2: Convert to fraction form
    19,784.20/27,305.42 = 11,405.56/x
  3. Step 3: Cross multiply
    19,784.20x = 27,305.42 × 11,405.56
  4. Step 4: Simplify right side
    19,784.20x = 311,433,606.14
  5. Step 5: Solve for x
    x = 311,433,606.14/19,784.20
  6. Step 6: Final answer
    x = 15,741.53

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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.