Home / 19,785.26-27,305.86-11,289.49

Finding the Fourth Proportional to 19,785.26, 27,305.86 and 11,289.49

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Solution

The fourth proportional to 19,785.26, 27,305.86 and 11,289.49 is: 15,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.26 : 27,305.86 = 11,289.49 : x
  2. Step 2: Convert to fraction form
    19,785.26/27,305.86 = 11,289.49/x
  3. Step 3: Cross multiply
    19,785.26x = 27,305.86 × 11,289.49
  4. Step 4: Simplify right side
    19,785.26x = 308,269,233.41
  5. Step 5: Solve for x
    x = 308,269,233.41/19,785.26
  6. Step 6: Final answer
    x = 15,580.75

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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.