Home / 15,742.29-21,724.23-8,668.56

Finding the Fourth Proportional to 15,742.29, 21,724.23 and 8,668.56

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Solution

The fourth proportional to 15,742.29, 21,724.23 and 8,668.56 is: 11,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.29 : 21,724.23 = 8,668.56 : x
  2. Step 2: Convert to fraction form
    15,742.29/21,724.23 = 8,668.56/x
  3. Step 3: Cross multiply
    15,742.29x = 21,724.23 × 8,668.56
  4. Step 4: Simplify right side
    15,742.29x = 188,317,791.21
  5. Step 5: Solve for x
    x = 188,317,791.21/15,742.29
  6. Step 6: Final answer
    x = 11,962.54

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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.