Home / 13,104.09-18,083.47-7,438.79

Finding the Fourth Proportional to 13,104.09, 18,083.47 and 7,438.79

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Solution

The fourth proportional to 13,104.09, 18,083.47 and 7,438.79 is: 10,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.09 : 18,083.47 = 7,438.79 : x
  2. Step 2: Convert to fraction form
    13,104.09/18,083.47 = 7,438.79/x
  3. Step 3: Cross multiply
    13,104.09x = 18,083.47 × 7,438.79
  4. Step 4: Simplify right side
    13,104.09x = 134,519,121.07
  5. Step 5: Solve for x
    x = 134,519,121.07/13,104.09
  6. Step 6: Final answer
    x = 10,265.43

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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.