Home / 27,120.78-37,427.31-15,185.34

Finding the Fourth Proportional to 27,120.78, 37,427.31 and 15,185.34

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Solution

The fourth proportional to 27,120.78, 37,427.31 and 15,185.34 is: 20,956.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,120.78 : 37,427.31 = 15,185.34 : x
  2. Step 2: Convert to fraction form
    27,120.78/37,427.31 = 15,185.34/x
  3. Step 3: Cross multiply
    27,120.78x = 37,427.31 × 15,185.34
  4. Step 4: Simplify right side
    27,120.78x = 568,346,427.64
  5. Step 5: Solve for x
    x = 568,346,427.64/27,120.78
  6. Step 6: Final answer
    x = 20,956.12

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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.