Home / 20,573.40-28,391.30-11,141.96

Finding the Fourth Proportional to 20,573.40, 28,391.30 and 11,141.96

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Solution

The fourth proportional to 20,573.40, 28,391.30 and 11,141.96 is: 15,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.40 : 28,391.30 = 11,141.96 : x
  2. Step 2: Convert to fraction form
    20,573.40/28,391.30 = 11,141.96/x
  3. Step 3: Cross multiply
    20,573.40x = 28,391.30 × 11,141.96
  4. Step 4: Simplify right side
    20,573.40x = 316,334,728.95
  5. Step 5: Solve for x
    x = 316,334,728.95/20,573.40
  6. Step 6: Final answer
    x = 15,375.91

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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.