Home / 15,741.13-21,723.38-8,668.21

Finding the Fourth Proportional to 15,741.13, 21,723.38 and 8,668.21

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Solution

The fourth proportional to 15,741.13, 21,723.38 and 8,668.21 is: 11,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.13 : 21,723.38 = 8,668.21 : x
  2. Step 2: Convert to fraction form
    15,741.13/21,723.38 = 8,668.21/x
  3. Step 3: Cross multiply
    15,741.13x = 21,723.38 × 8,668.21
  4. Step 4: Simplify right side
    15,741.13x = 188,302,819.75
  5. Step 5: Solve for x
    x = 188,302,819.75/15,741.13
  6. Step 6: Final answer
    x = 11,962.47

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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.