Home / 18,933.89-28,400.91-5,786.21

Finding the Fourth Proportional to 18,933.89, 28,400.91 and 5,786.21

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Solution

The fourth proportional to 18,933.89, 28,400.91 and 5,786.21 is: 8,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.89 : 28,400.91 = 5,786.21 : x
  2. Step 2: Convert to fraction form
    18,933.89/28,400.91 = 5,786.21/x
  3. Step 3: Cross multiply
    18,933.89x = 28,400.91 × 5,786.21
  4. Step 4: Simplify right side
    18,933.89x = 164,333,572.25
  5. Step 5: Solve for x
    x = 164,333,572.25/18,933.89
  6. Step 6: Final answer
    x = 8,679.33

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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.