Home / 28,724-39,636.69-16,147.94

Finding the Fourth Proportional to 28,724, 39,636.69 and 16,147.94

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Solution

The fourth proportional to 28,724, 39,636.69 and 16,147.94 is: 22,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724 : 39,636.69 = 16,147.94 : x
  2. Step 2: Convert to fraction form
    28,724/39,636.69 = 16,147.94/x
  3. Step 3: Cross multiply
    28,724x = 39,636.69 × 16,147.94
  4. Step 4: Simplify right side
    28,724x = 640,050,891.92
  5. Step 5: Solve for x
    x = 640,050,891.92/28,724
  6. Step 6: Final answer
    x = 22,282.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.