Home / 27,825.23-38,401.56-15,890.37

Finding the Fourth Proportional to 27,825.23, 38,401.56 and 15,890.37

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Solution

The fourth proportional to 27,825.23, 38,401.56 and 15,890.37 is: 21,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.23 : 38,401.56 = 15,890.37 : x
  2. Step 2: Convert to fraction form
    27,825.23/38,401.56 = 15,890.37/x
  3. Step 3: Cross multiply
    27,825.23x = 38,401.56 × 15,890.37
  4. Step 4: Simplify right side
    27,825.23x = 610,214,996.98
  5. Step 5: Solve for x
    x = 610,214,996.98/27,825.23
  6. Step 6: Final answer
    x = 21,930.28

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1.5x scale

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.