Home / 20,573.26-28,391.04-11,141.80

Finding the Fourth Proportional to 20,573.26, 28,391.04 and 11,141.80

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Solution

The fourth proportional to 20,573.26, 28,391.04 and 11,141.80 is: 15,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.26 : 28,391.04 = 11,141.80 : x
  2. Step 2: Convert to fraction form
    20,573.26/28,391.04 = 11,141.80/x
  3. Step 3: Cross multiply
    20,573.26x = 28,391.04 × 11,141.80
  4. Step 4: Simplify right side
    20,573.26x = 316,327,289.47
  5. Step 5: Solve for x
    x = 316,327,289.47/20,573.26
  6. Step 6: Final answer
    x = 15,375.65

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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.