Home / 28,148.82-42,212.64-11,499.94

Finding the Fourth Proportional to 28,148.82, 42,212.64 and 11,499.94

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Solution

The fourth proportional to 28,148.82, 42,212.64 and 11,499.94 is: 17,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.82 : 42,212.64 = 11,499.94 : x
  2. Step 2: Convert to fraction form
    28,148.82/42,212.64 = 11,499.94/x
  3. Step 3: Cross multiply
    28,148.82x = 42,212.64 × 11,499.94
  4. Step 4: Simplify right side
    28,148.82x = 485,442,827.24
  5. Step 5: Solve for x
    x = 485,442,827.24/28,148.82
  6. Step 6: Final answer
    x = 17,245.58

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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.