Home / 20,393.28-28,149.72-12,852.33

Finding the Fourth Proportional to 20,393.28, 28,149.72 and 12,852.33

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Solution

The fourth proportional to 20,393.28, 28,149.72 and 12,852.33 is: 17,740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.28 : 28,149.72 = 12,852.33 : x
  2. Step 2: Convert to fraction form
    20,393.28/28,149.72 = 12,852.33/x
  3. Step 3: Cross multiply
    20,393.28x = 28,149.72 × 12,852.33
  4. Step 4: Simplify right side
    20,393.28x = 361,789,490.85
  5. Step 5: Solve for x
    x = 361,789,490.85/20,393.28
  6. Step 6: Final answer
    x = 17,740.62

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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.