Home / 20,675.23-31,012.86-5,092.86

Finding the Fourth Proportional to 20,675.23, 31,012.86 and 5,092.86

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Solution

The fourth proportional to 20,675.23, 31,012.86 and 5,092.86 is: 7,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.23 : 31,012.86 = 5,092.86 : x
  2. Step 2: Convert to fraction form
    20,675.23/31,012.86 = 5,092.86/x
  3. Step 3: Cross multiply
    20,675.23x = 31,012.86 × 5,092.86
  4. Step 4: Simplify right side
    20,675.23x = 157,943,973.65
  5. Step 5: Solve for x
    x = 157,943,973.65/20,675.23
  6. Step 6: Final answer
    x = 7,639.28

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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.