Home / 28,710.76-43,074.30-11,185.60

Finding the Fourth Proportional to 28,710.76, 43,074.30 and 11,185.60

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Solution

The fourth proportional to 28,710.76, 43,074.30 and 11,185.60 is: 16,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710.76 : 43,074.30 = 11,185.60 : x
  2. Step 2: Convert to fraction form
    28,710.76/43,074.30 = 11,185.60/x
  3. Step 3: Cross multiply
    28,710.76x = 43,074.30 × 11,185.60
  4. Step 4: Simplify right side
    28,710.76x = 481,811,890.08
  5. Step 5: Solve for x
    x = 481,811,890.08/28,710.76
  6. Step 6: Final answer
    x = 16,781.58

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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.