Home / 20,186.48-30,205.91-11,870.42

Finding the Fourth Proportional to 20,186.48, 30,205.91 and 11,870.42

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Solution

The fourth proportional to 20,186.48, 30,205.91 and 11,870.42 is: 17,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.48 : 30,205.91 = 11,870.42 : x
  2. Step 2: Convert to fraction form
    20,186.48/30,205.91 = 11,870.42/x
  3. Step 3: Cross multiply
    20,186.48x = 30,205.91 × 11,870.42
  4. Step 4: Simplify right side
    20,186.48x = 358,556,716.83
  5. Step 5: Solve for x
    x = 358,556,716.83/20,186.48
  6. Step 6: Final answer
    x = 17,762.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.