Home / 26,085.78-39,120.84-7,361.28

Finding the Fourth Proportional to 26,085.78, 39,120.84 and 7,361.28

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Solution

The fourth proportional to 26,085.78, 39,120.84 and 7,361.28 is: 11,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,085.78 : 39,120.84 = 7,361.28 : x
  2. Step 2: Convert to fraction form
    26,085.78/39,120.84 = 7,361.28/x
  3. Step 3: Cross multiply
    26,085.78x = 39,120.84 × 7,361.28
  4. Step 4: Simplify right side
    26,085.78x = 287,979,457.08
  5. Step 5: Solve for x
    x = 287,979,457.08/26,085.78
  6. Step 6: Final answer
    x = 11,039.71

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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.