Home / 28,579.80-42,871.38-11,049.72

Finding the Fourth Proportional to 28,579.80, 42,871.38 and 11,049.72

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Solution

The fourth proportional to 28,579.80, 42,871.38 and 11,049.72 is: 16,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.80 : 42,871.38 = 11,049.72 : x
  2. Step 2: Convert to fraction form
    28,579.80/42,871.38 = 11,049.72/x
  3. Step 3: Cross multiply
    28,579.80x = 42,871.38 × 11,049.72
  4. Step 4: Simplify right side
    28,579.80x = 473,716,745.01
  5. Step 5: Solve for x
    x = 473,716,745.01/28,579.80
  6. Step 6: Final answer
    x = 16,575.23

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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.