Home / 28,890-39,871.44-16,315.56

Finding the Fourth Proportional to 28,890, 39,871.44 and 16,315.56

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Solution

The fourth proportional to 28,890, 39,871.44 and 16,315.56 is: 22,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890 : 39,871.44 = 16,315.56 : x
  2. Step 2: Convert to fraction form
    28,890/39,871.44 = 16,315.56/x
  3. Step 3: Cross multiply
    28,890x = 39,871.44 × 16,315.56
  4. Step 4: Simplify right side
    28,890x = 650,524,871.61
  5. Step 5: Solve for x
    x = 650,524,871.61/28,890
  6. Step 6: Final answer
    x = 22,517.30

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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.