Home / 18,735.72-28,107.20-5,587.80

Finding the Fourth Proportional to 18,735.72, 28,107.20 and 5,587.80

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Solution

The fourth proportional to 18,735.72, 28,107.20 and 5,587.80 is: 8,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.72 : 28,107.20 = 5,587.80 : x
  2. Step 2: Convert to fraction form
    18,735.72/28,107.20 = 5,587.80/x
  3. Step 3: Cross multiply
    18,735.72x = 28,107.20 × 5,587.80
  4. Step 4: Simplify right side
    18,735.72x = 157,057,412.16
  5. Step 5: Solve for x
    x = 157,057,412.16/18,735.72
  6. Step 6: Final answer
    x = 8,382.78

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1.5x scale

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.