Home / 28,629.45-42,943.66-11,758.80

Finding the Fourth Proportional to 28,629.45, 42,943.66 and 11,758.80

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Solution

The fourth proportional to 28,629.45, 42,943.66 and 11,758.80 is: 17,637.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.45 : 42,943.66 = 11,758.80 : x
  2. Step 2: Convert to fraction form
    28,629.45/42,943.66 = 11,758.80/x
  3. Step 3: Cross multiply
    28,629.45x = 42,943.66 × 11,758.80
  4. Step 4: Simplify right side
    28,629.45x = 504,965,909.21
  5. Step 5: Solve for x
    x = 504,965,909.21/28,629.45
  6. Step 6: Final answer
    x = 17,637.99

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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.