Home / 13,326.89-18,383.83-9,287.33

Finding the Fourth Proportional to 13,326.89, 18,383.83 and 9,287.33

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Solution

The fourth proportional to 13,326.89, 18,383.83 and 9,287.33 is: 12,811.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.89 : 18,383.83 = 9,287.33 : x
  2. Step 2: Convert to fraction form
    13,326.89/18,383.83 = 9,287.33/x
  3. Step 3: Cross multiply
    13,326.89x = 18,383.83 × 9,287.33
  4. Step 4: Simplify right side
    13,326.89x = 170,736,580.74
  5. Step 5: Solve for x
    x = 170,736,580.74/13,326.89
  6. Step 6: Final answer
    x = 12,811.44

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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.