Home / 28,556.26-39,405.45-15,979.30

Finding the Fourth Proportional to 28,556.26, 39,405.45 and 15,979.30

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Solution

The fourth proportional to 28,556.26, 39,405.45 and 15,979.30 is: 22,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.26 : 39,405.45 = 15,979.30 : x
  2. Step 2: Convert to fraction form
    28,556.26/39,405.45 = 15,979.30/x
  3. Step 3: Cross multiply
    28,556.26x = 39,405.45 × 15,979.30
  4. Step 4: Simplify right side
    28,556.26x = 629,671,507.19
  5. Step 5: Solve for x
    x = 629,671,507.19/28,556.26
  6. Step 6: Final answer
    x = 22,050.21

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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.