Home / 28,675.20-43,017.60-11,145.60

Finding the Fourth Proportional to 28,675.20, 43,017.60 and 11,145.60

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Solution

The fourth proportional to 28,675.20, 43,017.60 and 11,145.60 is: 16,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.20 : 43,017.60 = 11,145.60 : x
  2. Step 2: Convert to fraction form
    28,675.20/43,017.60 = 11,145.60/x
  3. Step 3: Cross multiply
    28,675.20x = 43,017.60 × 11,145.60
  4. Step 4: Simplify right side
    28,675.20x = 479,456,962.56
  5. Step 5: Solve for x
    x = 479,456,962.56/28,675.20
  6. Step 6: Final answer
    x = 16,720.27

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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.