Home / 20,753.28-28,630.80-14,469.30

Finding the Fourth Proportional to 20,753.28, 28,630.80 and 14,469.30

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Solution

The fourth proportional to 20,753.28, 28,630.80 and 14,469.30 is: 19,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.28 : 28,630.80 = 14,469.30 : x
  2. Step 2: Convert to fraction form
    20,753.28/28,630.80 = 14,469.30/x
  3. Step 3: Cross multiply
    20,753.28x = 28,630.80 × 14,469.30
  4. Step 4: Simplify right side
    20,753.28x = 414,267,634.44
  5. Step 5: Solve for x
    x = 414,267,634.44/20,753.28
  6. Step 6: Final answer
    x = 19,961.55

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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.