Home / 27,912.76-38,519.60-15,338.32

Finding the Fourth Proportional to 27,912.76, 38,519.60 and 15,338.32

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Solution

The fourth proportional to 27,912.76, 38,519.60 and 15,338.32 is: 21,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.76 : 38,519.60 = 15,338.32 : x
  2. Step 2: Convert to fraction form
    27,912.76/38,519.60 = 15,338.32/x
  3. Step 3: Cross multiply
    27,912.76x = 38,519.60 × 15,338.32
  4. Step 4: Simplify right side
    27,912.76x = 590,825,951.07
  5. Step 5: Solve for x
    x = 590,825,951.07/27,912.76
  6. Step 6: Final answer
    x = 21,166.88

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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.