Home / 20,668.53-28,534.26-15,814.11

Finding the Fourth Proportional to 20,668.53, 28,534.26 and 15,814.11

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Solution

The fourth proportional to 20,668.53, 28,534.26 and 15,814.11 is: 21,832.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.53 : 28,534.26 = 15,814.11 : x
  2. Step 2: Convert to fraction form
    20,668.53/28,534.26 = 15,814.11/x
  3. Step 3: Cross multiply
    20,668.53x = 28,534.26 × 15,814.11
  4. Step 4: Simplify right side
    20,668.53x = 451,243,926.41
  5. Step 5: Solve for x
    x = 451,243,926.41/20,668.53
  6. Step 6: Final answer
    x = 21,832.42

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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.