Home / 28,427.25-39,229.61-15,851.73

Finding the Fourth Proportional to 28,427.25, 39,229.61 and 15,851.73

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Solution

The fourth proportional to 28,427.25, 39,229.61 and 15,851.73 is: 21,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.25 : 39,229.61 = 15,851.73 : x
  2. Step 2: Convert to fraction form
    28,427.25/39,229.61 = 15,851.73/x
  3. Step 3: Cross multiply
    28,427.25x = 39,229.61 × 15,851.73
  4. Step 4: Simplify right side
    28,427.25x = 621,857,106.47
  5. Step 5: Solve for x
    x = 621,857,106.47/28,427.25
  6. Step 6: Final answer
    x = 21,875.39

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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.