Home / 28,986.42-43,488.30-16,665.78

Finding the Fourth Proportional to 28,986.42, 43,488.30 and 16,665.78

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Solution

The fourth proportional to 28,986.42, 43,488.30 and 16,665.78 is: 25,003.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.42 : 43,488.30 = 16,665.78 : x
  2. Step 2: Convert to fraction form
    28,986.42/43,488.30 = 16,665.78/x
  3. Step 3: Cross multiply
    28,986.42x = 43,488.30 × 16,665.78
  4. Step 4: Simplify right side
    28,986.42x = 724,766,440.37
  5. Step 5: Solve for x
    x = 724,766,440.37/28,986.42
  6. Step 6: Final answer
    x = 25,003.65

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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.