Home / 28,784.84-39,728.06-18,180.32

Finding the Fourth Proportional to 28,784.84, 39,728.06 and 18,180.32

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Solution

The fourth proportional to 28,784.84, 39,728.06 and 18,180.32 is: 25,091.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.84 : 39,728.06 = 18,180.32 : x
  2. Step 2: Convert to fraction form
    28,784.84/39,728.06 = 18,180.32/x
  3. Step 3: Cross multiply
    28,784.84x = 39,728.06 × 18,180.32
  4. Step 4: Simplify right side
    28,784.84x = 722,268,843.78
  5. Step 5: Solve for x
    x = 722,268,843.78/28,784.84
  6. Step 6: Final answer
    x = 25,091.99

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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.