Home / 15,701.67-21,668.31-8,628.54

Finding the Fourth Proportional to 15,701.67, 21,668.31 and 8,628.54

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Solution

The fourth proportional to 15,701.67, 21,668.31 and 8,628.54 is: 11,907.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.67 : 21,668.31 = 8,628.54 : x
  2. Step 2: Convert to fraction form
    15,701.67/21,668.31 = 8,628.54/x
  3. Step 3: Cross multiply
    15,701.67x = 21,668.31 × 8,628.54
  4. Step 4: Simplify right side
    15,701.67x = 186,965,879.57
  5. Step 5: Solve for x
    x = 186,965,879.57/15,701.67
  6. Step 6: Final answer
    x = 11,907.39

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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.