Home / 28,759.63-39,682.16-16,820.63

Finding the Fourth Proportional to 28,759.63, 39,682.16 and 16,820.63

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Solution

The fourth proportional to 28,759.63, 39,682.16 and 16,820.63 is: 23,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.63 : 39,682.16 = 16,820.63 : x
  2. Step 2: Convert to fraction form
    28,759.63/39,682.16 = 16,820.63/x
  3. Step 3: Cross multiply
    28,759.63x = 39,682.16 × 16,820.63
  4. Step 4: Simplify right side
    28,759.63x = 667,479,072.22
  5. Step 5: Solve for x
    x = 667,479,072.22/28,759.63
  6. Step 6: Final answer
    x = 23,208.89

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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.