Home / 28,720.82-39,645.54-16,788.03

Finding the Fourth Proportional to 28,720.82, 39,645.54 and 16,788.03

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Solution

The fourth proportional to 28,720.82, 39,645.54 and 16,788.03 is: 23,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.82 : 39,645.54 = 16,788.03 : x
  2. Step 2: Convert to fraction form
    28,720.82/39,645.54 = 16,788.03/x
  3. Step 3: Cross multiply
    28,720.82x = 39,645.54 × 16,788.03
  4. Step 4: Simplify right side
    28,720.82x = 665,570,514.89
  5. Step 5: Solve for x
    x = 665,570,514.89/28,720.82
  6. Step 6: Final answer
    x = 23,173.80

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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.