Home / 13,212.37-18,222.48-11,615.62

Finding the Fourth Proportional to 13,212.37, 18,222.48 and 11,615.62

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Solution

The fourth proportional to 13,212.37, 18,222.48 and 11,615.62 is: 16,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.37 : 18,222.48 = 11,615.62 : x
  2. Step 2: Convert to fraction form
    13,212.37/18,222.48 = 11,615.62/x
  3. Step 3: Cross multiply
    13,212.37x = 18,222.48 × 11,615.62
  4. Step 4: Simplify right side
    13,212.37x = 211,665,345.06
  5. Step 5: Solve for x
    x = 211,665,345.06/13,212.37
  6. Step 6: Final answer
    x = 16,020.25

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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.