Home / 27,860.55-38,450.22-15,921.58

Finding the Fourth Proportional to 27,860.55, 38,450.22 and 15,921.58

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Solution

The fourth proportional to 27,860.55, 38,450.22 and 15,921.58 is: 21,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,860.55 : 38,450.22 = 15,921.58 : x
  2. Step 2: Convert to fraction form
    27,860.55/38,450.22 = 15,921.58/x
  3. Step 3: Cross multiply
    27,860.55x = 38,450.22 × 15,921.58
  4. Step 4: Simplify right side
    27,860.55x = 612,188,025.82
  5. Step 5: Solve for x
    x = 612,188,025.82/27,860.55
  6. Step 6: Final answer
    x = 21,973.29

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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.