Home / 28,785.84-39,729.44-18,181.32

Finding the Fourth Proportional to 28,785.84, 39,729.44 and 18,181.32

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Solution

The fourth proportional to 28,785.84, 39,729.44 and 18,181.32 is: 25,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.84 : 39,729.44 = 18,181.32 : x
  2. Step 2: Convert to fraction form
    28,785.84/39,729.44 = 18,181.32/x
  3. Step 3: Cross multiply
    28,785.84x = 39,729.44 × 18,181.32
  4. Step 4: Simplify right side
    28,785.84x = 722,333,662.06
  5. Step 5: Solve for x
    x = 722,333,662.06/28,785.84
  6. Step 6: Final answer
    x = 25,093.37

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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.