Home / 28,112.72-38,796-15,537.56

Finding the Fourth Proportional to 28,112.72, 38,796 and 15,537.56

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Solution

The fourth proportional to 28,112.72, 38,796 and 15,537.56 is: 21,442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.72 : 38,796 = 15,537.56 : x
  2. Step 2: Convert to fraction form
    28,112.72/38,796 = 15,537.56/x
  3. Step 3: Cross multiply
    28,112.72x = 38,796 × 15,537.56
  4. Step 4: Simplify right side
    28,112.72x = 602,795,177.76
  5. Step 5: Solve for x
    x = 602,795,177.76/28,112.72
  6. Step 6: Final answer
    x = 21,442.08

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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.