Home / 20,593.76-28,419.19-11,519.01

Finding the Fourth Proportional to 20,593.76, 28,419.19 and 11,519.01

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Solution

The fourth proportional to 20,593.76, 28,419.19 and 11,519.01 is: 15,896.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.76 : 28,419.19 = 11,519.01 : x
  2. Step 2: Convert to fraction form
    20,593.76/28,419.19 = 11,519.01/x
  3. Step 3: Cross multiply
    20,593.76x = 28,419.19 × 11,519.01
  4. Step 4: Simplify right side
    20,593.76x = 327,360,876.21
  5. Step 5: Solve for x
    x = 327,360,876.21/20,593.76
  6. Step 6: Final answer
    x = 15,896.12

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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.