Home / 19,956.78-27,539.19-11,457.54

Finding the Fourth Proportional to 19,956.78, 27,539.19 and 11,457.54

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Solution

The fourth proportional to 19,956.78, 27,539.19 and 11,457.54 is: 15,810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.78 : 27,539.19 = 11,457.54 : x
  2. Step 2: Convert to fraction form
    19,956.78/27,539.19 = 11,457.54/x
  3. Step 3: Cross multiply
    19,956.78x = 27,539.19 × 11,457.54
  4. Step 4: Simplify right side
    19,956.78x = 315,531,370.99
  5. Step 5: Solve for x
    x = 315,531,370.99/19,956.78
  6. Step 6: Final answer
    x = 15,810.74

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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.