Home / 20,154.66-30,190.40-11,809.33

Finding the Fourth Proportional to 20,154.66, 30,190.40 and 11,809.33

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Solution

The fourth proportional to 20,154.66, 30,190.40 and 11,809.33 is: 17,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.66 : 30,190.40 = 11,809.33 : x
  2. Step 2: Convert to fraction form
    20,154.66/30,190.40 = 11,809.33/x
  3. Step 3: Cross multiply
    20,154.66x = 30,190.40 × 11,809.33
  4. Step 4: Simplify right side
    20,154.66x = 356,528,396.43
  5. Step 5: Solve for x
    x = 356,528,396.43/20,154.66
  6. Step 6: Final answer
    x = 17,689.63

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1.5x scale

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.