Home / 18,735.90-25,720.09-16,078.69

Finding the Fourth Proportional to 18,735.90, 25,720.09 and 16,078.69

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Solution

The fourth proportional to 18,735.90, 25,720.09 and 16,078.69 is: 22,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.90 : 25,720.09 = 16,078.69 : x
  2. Step 2: Convert to fraction form
    18,735.90/25,720.09 = 16,078.69/x
  3. Step 3: Cross multiply
    18,735.90x = 25,720.09 × 16,078.69
  4. Step 4: Simplify right side
    18,735.90x = 413,545,353.88
  5. Step 5: Solve for x
    x = 413,545,353.88/18,735.90
  6. Step 6: Final answer
    x = 22,072.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.