Home / 13,074.09-18,042.23-7,105.75

Finding the Fourth Proportional to 13,074.09, 18,042.23 and 7,105.75

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Solution

The fourth proportional to 13,074.09, 18,042.23 and 7,105.75 is: 9,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.09 : 18,042.23 = 7,105.75 : x
  2. Step 2: Convert to fraction form
    13,074.09/18,042.23 = 7,105.75/x
  3. Step 3: Cross multiply
    13,074.09x = 18,042.23 × 7,105.75
  4. Step 4: Simplify right side
    13,074.09x = 128,203,575.82
  5. Step 5: Solve for x
    x = 128,203,575.82/13,074.09
  6. Step 6: Final answer
    x = 9,805.93

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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.