Home / 28,664.85-39,556.16-15,918.84

Finding the Fourth Proportional to 28,664.85, 39,556.16 and 15,918.84

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Solution

The fourth proportional to 28,664.85, 39,556.16 and 15,918.84 is: 21,967.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.85 : 39,556.16 = 15,918.84 : x
  2. Step 2: Convert to fraction form
    28,664.85/39,556.16 = 15,918.84/x
  3. Step 3: Cross multiply
    28,664.85x = 39,556.16 × 15,918.84
  4. Step 4: Simplify right side
    28,664.85x = 629,688,182.05
  5. Step 5: Solve for x
    x = 629,688,182.05/28,664.85
  6. Step 6: Final answer
    x = 21,967.26

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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.