Home / 28,236.48-38,966.64-15,662.04

Finding the Fourth Proportional to 28,236.48, 38,966.64 and 15,662.04

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Solution

The fourth proportional to 28,236.48, 38,966.64 and 15,662.04 is: 21,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.48 : 38,966.64 = 15,662.04 : x
  2. Step 2: Convert to fraction form
    28,236.48/38,966.64 = 15,662.04/x
  3. Step 3: Cross multiply
    28,236.48x = 38,966.64 × 15,662.04
  4. Step 4: Simplify right side
    28,236.48x = 610,297,074.35
  5. Step 5: Solve for x
    x = 610,297,074.35/28,236.48
  6. Step 6: Final answer
    x = 21,613.78

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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.