Home / 28,231.62-42,354.36-19,927.86

Finding the Fourth Proportional to 28,231.62, 42,354.36 and 19,927.86

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Solution

The fourth proportional to 28,231.62, 42,354.36 and 19,927.86 is: 29,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.62 : 42,354.36 = 19,927.86 : x
  2. Step 2: Convert to fraction form
    28,231.62/42,354.36 = 19,927.86/x
  3. Step 3: Cross multiply
    28,231.62x = 42,354.36 × 19,927.86
  4. Step 4: Simplify right side
    28,231.62x = 844,031,756.47
  5. Step 5: Solve for x
    x = 844,031,756.47/28,231.62
  6. Step 6: Final answer
    x = 29,896.68

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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.