Home / 28,820.06-39,757.90-16,720.48

Finding the Fourth Proportional to 28,820.06, 39,757.90 and 16,720.48

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Solution

The fourth proportional to 28,820.06, 39,757.90 and 16,720.48 is: 23,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.06 : 39,757.90 = 16,720.48 : x
  2. Step 2: Convert to fraction form
    28,820.06/39,757.90 = 16,720.48/x
  3. Step 3: Cross multiply
    28,820.06x = 39,757.90 × 16,720.48
  4. Step 4: Simplify right side
    28,820.06x = 664,771,171.79
  5. Step 5: Solve for x
    x = 664,771,171.79/28,820.06
  6. Step 6: Final answer
    x = 23,066.27

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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.