Home / 20,583.14-28,404.56-11,151.68

Finding the Fourth Proportional to 20,583.14, 28,404.56 and 11,151.68

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Solution

The fourth proportional to 20,583.14, 28,404.56 and 11,151.68 is: 15,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.14 : 28,404.56 = 11,151.68 : x
  2. Step 2: Convert to fraction form
    20,583.14/28,404.56 = 11,151.68/x
  3. Step 3: Cross multiply
    20,583.14x = 28,404.56 × 11,151.68
  4. Step 4: Simplify right side
    20,583.14x = 316,758,507.90
  5. Step 5: Solve for x
    x = 316,758,507.90/20,583.14
  6. Step 6: Final answer
    x = 15,389.22

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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.