Home / 20,668.64-28,522.58-11,237.21

Finding the Fourth Proportional to 20,668.64, 28,522.58 and 11,237.21

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Solution

The fourth proportional to 20,668.64, 28,522.58 and 11,237.21 is: 15,507.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.64 : 28,522.58 = 11,237.21 : x
  2. Step 2: Convert to fraction form
    20,668.64/28,522.58 = 11,237.21/x
  3. Step 3: Cross multiply
    20,668.64x = 28,522.58 × 11,237.21
  4. Step 4: Simplify right side
    20,668.64x = 320,514,106.68
  5. Step 5: Solve for x
    x = 320,514,106.68/20,668.64
  6. Step 6: Final answer
    x = 15,507.26

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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.