Home / 28,493.80-39,307.62-20,091.88

Finding the Fourth Proportional to 28,493.80, 39,307.62 and 20,091.88

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Solution

The fourth proportional to 28,493.80, 39,307.62 and 20,091.88 is: 27,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.80 : 39,307.62 = 20,091.88 : x
  2. Step 2: Convert to fraction form
    28,493.80/39,307.62 = 20,091.88/x
  3. Step 3: Cross multiply
    28,493.80x = 39,307.62 × 20,091.88
  4. Step 4: Simplify right side
    28,493.80x = 789,763,984.13
  5. Step 5: Solve for x
    x = 789,763,984.13/28,493.80
  6. Step 6: Final answer
    x = 27,717.05

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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.