Home / 19,709.12-27,185.06-11,745.20

Finding the Fourth Proportional to 19,709.12, 27,185.06 and 11,745.20

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Solution

The fourth proportional to 19,709.12, 27,185.06 and 11,745.20 is: 16,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.12 : 27,185.06 = 11,745.20 : x
  2. Step 2: Convert to fraction form
    19,709.12/27,185.06 = 11,745.20/x
  3. Step 3: Cross multiply
    19,709.12x = 27,185.06 × 11,745.20
  4. Step 4: Simplify right side
    19,709.12x = 319,293,772.06
  5. Step 5: Solve for x
    x = 319,293,772.06/19,709.12
  6. Step 6: Final answer
    x = 16,200.31

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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.