Home / 28,538.60-42,814.30-16,845.80

Finding the Fourth Proportional to 28,538.60, 42,814.30 and 16,845.80

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Solution

The fourth proportional to 28,538.60, 42,814.30 and 16,845.80 is: 25,272.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.60 : 42,814.30 = 16,845.80 : x
  2. Step 2: Convert to fraction form
    28,538.60/42,814.30 = 16,845.80/x
  3. Step 3: Cross multiply
    28,538.60x = 42,814.30 × 16,845.80
  4. Step 4: Simplify right side
    28,538.60x = 721,241,134.94
  5. Step 5: Solve for x
    x = 721,241,134.94/28,538.60
  6. Step 6: Final answer
    x = 25,272.48

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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.