Home / 13,116.78-18,093.69-7,813.26

Finding the Fourth Proportional to 13,116.78, 18,093.69 and 7,813.26

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Solution

The fourth proportional to 13,116.78, 18,093.69 and 7,813.26 is: 10,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.78 : 18,093.69 = 7,813.26 : x
  2. Step 2: Convert to fraction form
    13,116.78/18,093.69 = 7,813.26/x
  3. Step 3: Cross multiply
    13,116.78x = 18,093.69 × 7,813.26
  4. Step 4: Simplify right side
    13,116.78x = 141,370,704.33
  5. Step 5: Solve for x
    x = 141,370,704.33/13,116.78
  6. Step 6: Final answer
    x = 10,777.85

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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.