Home / 19,785.97-27,305.37-11,289.47

Finding the Fourth Proportional to 19,785.97, 27,305.37 and 11,289.47

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Solution

The fourth proportional to 19,785.97, 27,305.37 and 11,289.47 is: 15,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.97 : 27,305.37 = 11,289.47 : x
  2. Step 2: Convert to fraction form
    19,785.97/27,305.37 = 11,289.47/x
  3. Step 3: Cross multiply
    19,785.97x = 27,305.37 × 11,289.47
  4. Step 4: Simplify right side
    19,785.97x = 308,263,155.45
  5. Step 5: Solve for x
    x = 308,263,155.45/19,785.97
  6. Step 6: Final answer
    x = 15,579.89

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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.