Home / 12,830.20-19,229.10-11,372.20

Finding the Fourth Proportional to 12,830.20, 19,229.10 and 11,372.20

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Solution

The fourth proportional to 12,830.20, 19,229.10 and 11,372.20 is: 17,043.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,830.20 : 19,229.10 = 11,372.20 : x
  2. Step 2: Convert to fraction form
    12,830.20/19,229.10 = 11,372.20/x
  3. Step 3: Cross multiply
    12,830.20x = 19,229.10 × 11,372.20
  4. Step 4: Simplify right side
    12,830.20x = 218,677,171.02
  5. Step 5: Solve for x
    x = 218,677,171.02/12,830.20
  6. Step 6: Final answer
    x = 17,043.94

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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.