Home / 28,128.22-38,818.40-16,193.28

Finding the Fourth Proportional to 28,128.22, 38,818.40 and 16,193.28

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Solution

The fourth proportional to 28,128.22, 38,818.40 and 16,193.28 is: 22,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.22 : 38,818.40 = 16,193.28 : x
  2. Step 2: Convert to fraction form
    28,128.22/38,818.40 = 16,193.28/x
  3. Step 3: Cross multiply
    28,128.22x = 38,818.40 × 16,193.28
  4. Step 4: Simplify right side
    28,128.22x = 628,597,220.35
  5. Step 5: Solve for x
    x = 628,597,220.35/28,128.22
  6. Step 6: Final answer
    x = 22,347.56

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Double scale
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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.