Home / 12,884.61-19,327.82-4,120.23

Finding the Fourth Proportional to 12,884.61, 19,327.82 and 4,120.23

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Solution

The fourth proportional to 12,884.61, 19,327.82 and 4,120.23 is: 6,180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884.61 : 19,327.82 = 4,120.23 : x
  2. Step 2: Convert to fraction form
    12,884.61/19,327.82 = 4,120.23/x
  3. Step 3: Cross multiply
    12,884.61x = 19,327.82 × 4,120.23
  4. Step 4: Simplify right side
    12,884.61x = 79,635,043.20
  5. Step 5: Solve for x
    x = 79,635,043.20/12,884.61
  6. Step 6: Final answer
    x = 6,180.63

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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.