Home / 20,573.30-28,391.28-11,141.86

Finding the Fourth Proportional to 20,573.30, 28,391.28 and 11,141.86

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Solution

The fourth proportional to 20,573.30, 28,391.28 and 11,141.86 is: 15,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.30 : 28,391.28 = 11,141.86 : x
  2. Step 2: Convert to fraction form
    20,573.30/28,391.28 = 11,141.86/x
  3. Step 3: Cross multiply
    20,573.30x = 28,391.28 × 11,141.86
  4. Step 4: Simplify right side
    20,573.30x = 316,331,525.02
  5. Step 5: Solve for x
    x = 316,331,525.02/20,573.30
  6. Step 6: Final answer
    x = 15,375.83

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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.