Home / 20,573.32-28,391.19-11,141.89

Finding the Fourth Proportional to 20,573.32, 28,391.19 and 11,141.89

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Solution

The fourth proportional to 20,573.32, 28,391.19 and 11,141.89 is: 15,375.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.32 : 28,391.19 = 11,141.89 : x
  2. Step 2: Convert to fraction form
    20,573.32/28,391.19 = 11,141.89/x
  3. Step 3: Cross multiply
    20,573.32x = 28,391.19 × 11,141.89
  4. Step 4: Simplify right side
    20,573.32x = 316,331,515.95
  5. Step 5: Solve for x
    x = 316,331,515.95/20,573.32
  6. Step 6: Final answer
    x = 15,375.81

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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.