Home / 28,375.25-39,159.06-15,800

Finding the Fourth Proportional to 28,375.25, 39,159.06 and 15,800

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Solution

The fourth proportional to 28,375.25, 39,159.06 and 15,800 is: 21,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.25 : 39,159.06 = 15,800 : x
  2. Step 2: Convert to fraction form
    28,375.25/39,159.06 = 15,800/x
  3. Step 3: Cross multiply
    28,375.25x = 39,159.06 × 15,800
  4. Step 4: Simplify right side
    28,375.25x = 618,713,148
  5. Step 5: Solve for x
    x = 618,713,148/28,375.25
  6. Step 6: Final answer
    x = 21,804.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.