Home / 20,801.94-28,706.49-11,730.21

Finding the Fourth Proportional to 20,801.94, 28,706.49 and 11,730.21

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Solution

The fourth proportional to 20,801.94, 28,706.49 and 11,730.21 is: 16,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.94 : 28,706.49 = 11,730.21 : x
  2. Step 2: Convert to fraction form
    20,801.94/28,706.49 = 11,730.21/x
  3. Step 3: Cross multiply
    20,801.94x = 28,706.49 × 11,730.21
  4. Step 4: Simplify right side
    20,801.94x = 336,733,156.06
  5. Step 5: Solve for x
    x = 336,733,156.06/20,801.94
  6. Step 6: Final answer
    x = 16,187.58

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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.