Home / 21,204.64-31,817.22-8,728.48

Finding the Fourth Proportional to 21,204.64, 31,817.22 and 8,728.48

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Solution

The fourth proportional to 21,204.64, 31,817.22 and 8,728.48 is: 13,096.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.64 : 31,817.22 = 8,728.48 : x
  2. Step 2: Convert to fraction form
    21,204.64/31,817.22 = 8,728.48/x
  3. Step 3: Cross multiply
    21,204.64x = 31,817.22 × 8,728.48
  4. Step 4: Simplify right side
    21,204.64x = 277,715,968.43
  5. Step 5: Solve for x
    x = 277,715,968.43/21,204.64
  6. Step 6: Final answer
    x = 13,096.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.