Home / 12,013.09-18,021.35-3,693.80

Finding the Fourth Proportional to 12,013.09, 18,021.35 and 3,693.80

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Solution

The fourth proportional to 12,013.09, 18,021.35 and 3,693.80 is: 5,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.09 : 18,021.35 = 3,693.80 : x
  2. Step 2: Convert to fraction form
    12,013.09/18,021.35 = 3,693.80/x
  3. Step 3: Cross multiply
    12,013.09x = 18,021.35 × 3,693.80
  4. Step 4: Simplify right side
    12,013.09x = 66,567,262.63
  5. Step 5: Solve for x
    x = 66,567,262.63/12,013.09
  6. Step 6: Final answer
    x = 5,541.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.