Home / 28,672.32-42,992.06-11,121.66

Finding the Fourth Proportional to 28,672.32, 42,992.06 and 11,121.66

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Solution

The fourth proportional to 28,672.32, 42,992.06 and 11,121.66 is: 16,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,672.32 : 42,992.06 = 11,121.66 : x
  2. Step 2: Convert to fraction form
    28,672.32/42,992.06 = 11,121.66/x
  3. Step 3: Cross multiply
    28,672.32x = 42,992.06 × 11,121.66
  4. Step 4: Simplify right side
    28,672.32x = 478,143,074.02
  5. Step 5: Solve for x
    x = 478,143,074.02/28,672.32
  6. Step 6: Final answer
    x = 16,676.12

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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.