Home / 20,573.87-28,391.98-11,142.44

Finding the Fourth Proportional to 20,573.87, 28,391.98 and 11,142.44

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Solution

The fourth proportional to 20,573.87, 28,391.98 and 11,142.44 is: 15,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.87 : 28,391.98 = 11,142.44 : x
  2. Step 2: Convert to fraction form
    20,573.87/28,391.98 = 11,142.44/x
  3. Step 3: Cross multiply
    20,573.87x = 28,391.98 × 11,142.44
  4. Step 4: Simplify right side
    20,573.87x = 316,355,791.67
  5. Step 5: Solve for x
    x = 316,355,791.67/20,573.87
  6. Step 6: Final answer
    x = 15,376.58

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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.