Home / 28,517.47-39,353.39-15,771.36

Finding the Fourth Proportional to 28,517.47, 39,353.39 and 15,771.36

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Solution

The fourth proportional to 28,517.47, 39,353.39 and 15,771.36 is: 21,764.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.47 : 39,353.39 = 15,771.36 : x
  2. Step 2: Convert to fraction form
    28,517.47/39,353.39 = 15,771.36/x
  3. Step 3: Cross multiply
    28,517.47x = 39,353.39 × 15,771.36
  4. Step 4: Simplify right side
    28,517.47x = 620,656,476.12
  5. Step 5: Solve for x
    x = 620,656,476.12/28,517.47
  6. Step 6: Final answer
    x = 21,764.08

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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.