Home / 28,063.72-42,104.22-12,485.80

Finding the Fourth Proportional to 28,063.72, 42,104.22 and 12,485.80

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Solution

The fourth proportional to 28,063.72, 42,104.22 and 12,485.80 is: 18,732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.72 : 42,104.22 = 12,485.80 : x
  2. Step 2: Convert to fraction form
    28,063.72/42,104.22 = 12,485.80/x
  3. Step 3: Cross multiply
    28,063.72x = 42,104.22 × 12,485.80
  4. Step 4: Simplify right side
    28,063.72x = 525,704,870.08
  5. Step 5: Solve for x
    x = 525,704,870.08/28,063.72
  6. Step 6: Final answer
    x = 18,732.54

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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.