Home / 12,892.20-19,305.72-8,197.80

Finding the Fourth Proportional to 12,892.20, 19,305.72 and 8,197.80

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Solution

The fourth proportional to 12,892.20, 19,305.72 and 8,197.80 is: 12,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,892.20 : 19,305.72 = 8,197.80 : x
  2. Step 2: Convert to fraction form
    12,892.20/19,305.72 = 8,197.80/x
  3. Step 3: Cross multiply
    12,892.20x = 19,305.72 × 8,197.80
  4. Step 4: Simplify right side
    12,892.20x = 158,264,431.42
  5. Step 5: Solve for x
    x = 158,264,431.42/12,892.20
  6. Step 6: Final answer
    x = 12,275.98

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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.