Home / 12,768.60-19,167.30-9,859.80

Finding the Fourth Proportional to 12,768.60, 19,167.30 and 9,859.80

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Solution

The fourth proportional to 12,768.60, 19,167.30 and 9,859.80 is: 14,800.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.60 : 19,167.30 = 9,859.80 : x
  2. Step 2: Convert to fraction form
    12,768.60/19,167.30 = 9,859.80/x
  3. Step 3: Cross multiply
    12,768.60x = 19,167.30 × 9,859.80
  4. Step 4: Simplify right side
    12,768.60x = 188,985,744.54
  5. Step 5: Solve for x
    x = 188,985,744.54/12,768.60
  6. Step 6: Final answer
    x = 14,800.82

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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.