Home / 28,786.77-43,168.77-13,991.31

Finding the Fourth Proportional to 28,786.77, 43,168.77 and 13,991.31

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Solution

The fourth proportional to 28,786.77, 43,168.77 and 13,991.31 is: 20,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.77 : 43,168.77 = 13,991.31 : x
  2. Step 2: Convert to fraction form
    28,786.77/43,168.77 = 13,991.31/x
  3. Step 3: Cross multiply
    28,786.77x = 43,168.77 × 13,991.31
  4. Step 4: Simplify right side
    28,786.77x = 603,987,643.39
  5. Step 5: Solve for x
    x = 603,987,643.39/28,786.77
  6. Step 6: Final answer
    x = 20,981.43

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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.