Home / 13,578.08-18,736.36-7,608.48

Finding the Fourth Proportional to 13,578.08, 18,736.36 and 7,608.48

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Solution

The fourth proportional to 13,578.08, 18,736.36 and 7,608.48 is: 10,498.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.08 : 18,736.36 = 7,608.48 : x
  2. Step 2: Convert to fraction form
    13,578.08/18,736.36 = 7,608.48/x
  3. Step 3: Cross multiply
    13,578.08x = 18,736.36 × 7,608.48
  4. Step 4: Simplify right side
    13,578.08x = 142,555,279.24
  5. Step 5: Solve for x
    x = 142,555,279.24/13,578.08
  6. Step 6: Final answer
    x = 10,498.93

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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.