Home / 19,647.28-27,112.62-11,687.68

Finding the Fourth Proportional to 19,647.28, 27,112.62 and 11,687.68

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Solution

The fourth proportional to 19,647.28, 27,112.62 and 11,687.68 is: 16,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.28 : 27,112.62 = 11,687.68 : x
  2. Step 2: Convert to fraction form
    19,647.28/27,112.62 = 11,687.68/x
  3. Step 3: Cross multiply
    19,647.28x = 27,112.62 × 11,687.68
  4. Step 4: Simplify right side
    19,647.28x = 316,883,626.52
  5. Step 5: Solve for x
    x = 316,883,626.52/19,647.28
  6. Step 6: Final answer
    x = 16,128.63

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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.