Home / 33,115.76-45,668.40-21,182.88

Finding the Fourth Proportional to 33,115.76, 45,668.40 and 21,182.88

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Solution

The fourth proportional to 33,115.76, 45,668.40 and 21,182.88 is: 29,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,115.76 : 45,668.40 = 21,182.88 : x
  2. Step 2: Convert to fraction form
    33,115.76/45,668.40 = 21,182.88/x
  3. Step 3: Cross multiply
    33,115.76x = 45,668.40 × 21,182.88
  4. Step 4: Simplify right side
    33,115.76x = 967,388,236.99
  5. Step 5: Solve for x
    x = 967,388,236.99/33,115.76
  6. Step 6: Final answer
    x = 29,212.32

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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.