Home / 20,668.06-28,521.99-11,236.63

Finding the Fourth Proportional to 20,668.06, 28,521.99 and 11,236.63

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Solution

The fourth proportional to 20,668.06, 28,521.99 and 11,236.63 is: 15,506.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.06 : 28,521.99 = 11,236.63 : x
  2. Step 2: Convert to fraction form
    20,668.06/28,521.99 = 11,236.63/x
  3. Step 3: Cross multiply
    20,668.06x = 28,521.99 × 11,236.63
  4. Step 4: Simplify right side
    20,668.06x = 320,491,048.49
  5. Step 5: Solve for x
    x = 320,491,048.49/20,668.06
  6. Step 6: Final answer
    x = 15,506.59

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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.