Home / 28,738.61-39,658.89-16,163.36

Finding the Fourth Proportional to 28,738.61, 39,658.89 and 16,163.36

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Solution

The fourth proportional to 28,738.61, 39,658.89 and 16,163.36 is: 22,305.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.61 : 39,658.89 = 16,163.36 : x
  2. Step 2: Convert to fraction form
    28,738.61/39,658.89 = 16,163.36/x
  3. Step 3: Cross multiply
    28,738.61x = 39,658.89 × 16,163.36
  4. Step 4: Simplify right side
    28,738.61x = 641,020,927.31
  5. Step 5: Solve for x
    x = 641,020,927.31/28,738.61
  6. Step 6: Final answer
    x = 22,305.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.