Home / 28,912.80-43,320.60-14,089.80

Finding the Fourth Proportional to 28,912.80, 43,320.60 and 14,089.80

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Solution

The fourth proportional to 28,912.80, 43,320.60 and 14,089.80 is: 21,111.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.80 : 43,320.60 = 14,089.80 : x
  2. Step 2: Convert to fraction form
    28,912.80/43,320.60 = 14,089.80/x
  3. Step 3: Cross multiply
    28,912.80x = 43,320.60 × 14,089.80
  4. Step 4: Simplify right side
    28,912.80x = 610,378,589.88
  5. Step 5: Solve for x
    x = 610,378,589.88/28,912.80
  6. Step 6: Final answer
    x = 21,111.02

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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.