Home / 13,208.51-18,236.16-11,789.72

Finding the Fourth Proportional to 13,208.51, 18,236.16 and 11,789.72

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Solution

The fourth proportional to 13,208.51, 18,236.16 and 11,789.72 is: 16,277.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.51 : 18,236.16 = 11,789.72 : x
  2. Step 2: Convert to fraction form
    13,208.51/18,236.16 = 11,789.72/x
  3. Step 3: Cross multiply
    13,208.51x = 18,236.16 × 11,789.72
  4. Step 4: Simplify right side
    13,208.51x = 214,999,129.09
  5. Step 5: Solve for x
    x = 214,999,129.09/13,208.51
  6. Step 6: Final answer
    x = 16,277.33

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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.