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Finding the Fourth Proportional to 19,409.78, 26,784.69 and 11,027.06

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Solution

The fourth proportional to 19,409.78, 26,784.69 and 11,027.06 is: 15,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.78 : 26,784.69 = 11,027.06 : x
  2. Step 2: Convert to fraction form
    19,409.78/26,784.69 = 11,027.06/x
  3. Step 3: Cross multiply
    19,409.78x = 26,784.69 × 11,027.06
  4. Step 4: Simplify right side
    19,409.78x = 295,356,383.71
  5. Step 5: Solve for x
    x = 295,356,383.71/19,409.78
  6. Step 6: Final answer
    x = 15,216.88

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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.