Home / 28,201.90-38,918.61-16,871.87

Finding the Fourth Proportional to 28,201.90, 38,918.61 and 16,871.87

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Solution

The fourth proportional to 28,201.90, 38,918.61 and 16,871.87 is: 23,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.90 : 38,918.61 = 16,871.87 : x
  2. Step 2: Convert to fraction form
    28,201.90/38,918.61 = 16,871.87/x
  3. Step 3: Cross multiply
    28,201.90x = 38,918.61 × 16,871.87
  4. Step 4: Simplify right side
    28,201.90x = 656,629,728.50
  5. Step 5: Solve for x
    x = 656,629,728.50/28,201.90
  6. Step 6: Final answer
    x = 23,283.18

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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.