Home / 20,927.81-28,882.41-11,976.59

Finding the Fourth Proportional to 20,927.81, 28,882.41 and 11,976.59

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Solution

The fourth proportional to 20,927.81, 28,882.41 and 11,976.59 is: 16,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.81 : 28,882.41 = 11,976.59 : x
  2. Step 2: Convert to fraction form
    20,927.81/28,882.41 = 11,976.59/x
  3. Step 3: Cross multiply
    20,927.81x = 28,882.41 × 11,976.59
  4. Step 4: Simplify right side
    20,927.81x = 345,912,782.78
  5. Step 5: Solve for x
    x = 345,912,782.78/20,927.81
  6. Step 6: Final answer
    x = 16,528.86

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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.