Home / 28,821.41-39,777.44-16,889.50

Finding the Fourth Proportional to 28,821.41, 39,777.44 and 16,889.50

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Solution

The fourth proportional to 28,821.41, 39,777.44 and 16,889.50 is: 23,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.41 : 39,777.44 = 16,889.50 : x
  2. Step 2: Convert to fraction form
    28,821.41/39,777.44 = 16,889.50/x
  3. Step 3: Cross multiply
    28,821.41x = 39,777.44 × 16,889.50
  4. Step 4: Simplify right side
    28,821.41x = 671,821,072.88
  5. Step 5: Solve for x
    x = 671,821,072.88/28,821.41
  6. Step 6: Final answer
    x = 23,309.79

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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.