Home / 12,821.05-19,243.86-6,251.83

Finding the Fourth Proportional to 12,821.05, 19,243.86 and 6,251.83

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Solution

The fourth proportional to 12,821.05, 19,243.86 and 6,251.83 is: 9,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.05 : 19,243.86 = 6,251.83 : x
  2. Step 2: Convert to fraction form
    12,821.05/19,243.86 = 6,251.83/x
  3. Step 3: Cross multiply
    12,821.05x = 19,243.86 × 6,251.83
  4. Step 4: Simplify right side
    12,821.05x = 120,309,341.26
  5. Step 5: Solve for x
    x = 120,309,341.26/12,821.05
  6. Step 6: Final answer
    x = 9,383.74

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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.