Home / 28,240.30-42,367.47-19,936.50

Finding the Fourth Proportional to 28,240.30, 42,367.47 and 19,936.50

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Solution

The fourth proportional to 28,240.30, 42,367.47 and 19,936.50 is: 29,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.30 : 42,367.47 = 19,936.50 : x
  2. Step 2: Convert to fraction form
    28,240.30/42,367.47 = 19,936.50/x
  3. Step 3: Cross multiply
    28,240.30x = 42,367.47 × 19,936.50
  4. Step 4: Simplify right side
    28,240.30x = 844,659,065.66
  5. Step 5: Solve for x
    x = 844,659,065.66/28,240.30
  6. Step 6: Final answer
    x = 29,909.71

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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.