Home / 21,081.76-31,636.96-11,227.94

Finding the Fourth Proportional to 21,081.76, 31,636.96 and 11,227.94

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Solution

The fourth proportional to 21,081.76, 31,636.96 and 11,227.94 is: 16,849.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.76 : 31,636.96 = 11,227.94 : x
  2. Step 2: Convert to fraction form
    21,081.76/31,636.96 = 11,227.94/x
  3. Step 3: Cross multiply
    21,081.76x = 31,636.96 × 11,227.94
  4. Step 4: Simplify right side
    21,081.76x = 355,217,702.41
  5. Step 5: Solve for x
    x = 355,217,702.41/21,081.76
  6. Step 6: Final answer
    x = 16,849.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.