Home / 21,197.02-31,789.42-8,546.78

Finding the Fourth Proportional to 21,197.02, 31,789.42 and 8,546.78

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Solution

The fourth proportional to 21,197.02, 31,789.42 and 8,546.78 is: 12,817.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.02 : 31,789.42 = 8,546.78 : x
  2. Step 2: Convert to fraction form
    21,197.02/31,789.42 = 8,546.78/x
  3. Step 3: Cross multiply
    21,197.02x = 31,789.42 × 8,546.78
  4. Step 4: Simplify right side
    21,197.02x = 271,697,179.07
  5. Step 5: Solve for x
    x = 271,697,179.07/21,197.02
  6. Step 6: Final answer
    x = 12,817.71

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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.