Home / 28,722-39,636.36-16,146.84

Finding the Fourth Proportional to 28,722, 39,636.36 and 16,146.84

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Solution

The fourth proportional to 28,722, 39,636.36 and 16,146.84 is: 22,282.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722 : 39,636.36 = 16,146.84 : x
  2. Step 2: Convert to fraction form
    28,722/39,636.36 = 16,146.84/x
  3. Step 3: Cross multiply
    28,722x = 39,636.36 × 16,146.84
  4. Step 4: Simplify right side
    28,722x = 640,001,963.10
  5. Step 5: Solve for x
    x = 640,001,963.10/28,722
  6. Step 6: Final answer
    x = 22,282.64

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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.