Home / 28,556.39-39,382.07-18,474.32

Finding the Fourth Proportional to 28,556.39, 39,382.07 and 18,474.32

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Solution

The fourth proportional to 28,556.39, 39,382.07 and 18,474.32 is: 25,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.39 : 39,382.07 = 18,474.32 : x
  2. Step 2: Convert to fraction form
    28,556.39/39,382.07 = 18,474.32/x
  3. Step 3: Cross multiply
    28,556.39x = 39,382.07 × 18,474.32
  4. Step 4: Simplify right side
    28,556.39x = 727,556,963.44
  5. Step 5: Solve for x
    x = 727,556,963.44/28,556.39
  6. Step 6: Final answer
    x = 25,477.90

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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.