Home / 20,668.08-28,521.99-11,236.62

Finding the Fourth Proportional to 20,668.08, 28,521.99 and 11,236.62

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Solution

The fourth proportional to 20,668.08, 28,521.99 and 11,236.62 is: 15,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.08 : 28,521.99 = 11,236.62 : x
  2. Step 2: Convert to fraction form
    20,668.08/28,521.99 = 11,236.62/x
  3. Step 3: Cross multiply
    20,668.08x = 28,521.99 × 11,236.62
  4. Step 4: Simplify right side
    20,668.08x = 320,490,763.27
  5. Step 5: Solve for x
    x = 320,490,763.27/20,668.08
  6. Step 6: Final answer
    x = 15,506.56

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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.