Home / 12,789.80-17,664.68-8,533.49

Finding the Fourth Proportional to 12,789.80, 17,664.68 and 8,533.49

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Solution

The fourth proportional to 12,789.80, 17,664.68 and 8,533.49 is: 11,786.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.80 : 17,664.68 = 8,533.49 : x
  2. Step 2: Convert to fraction form
    12,789.80/17,664.68 = 8,533.49/x
  3. Step 3: Cross multiply
    12,789.80x = 17,664.68 × 8,533.49
  4. Step 4: Simplify right side
    12,789.80x = 150,741,303.14
  5. Step 5: Solve for x
    x = 150,741,303.14/12,789.80
  6. Step 6: Final answer
    x = 11,786.06

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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.