Home / 12,999.05-19,500.19-4,231.61

Finding the Fourth Proportional to 12,999.05, 19,500.19 and 4,231.61

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Solution

The fourth proportional to 12,999.05, 19,500.19 and 4,231.61 is: 6,347.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.05 : 19,500.19 = 4,231.61 : x
  2. Step 2: Convert to fraction form
    12,999.05/19,500.19 = 4,231.61/x
  3. Step 3: Cross multiply
    12,999.05x = 19,500.19 × 4,231.61
  4. Step 4: Simplify right side
    12,999.05x = 82,517,199.01
  5. Step 5: Solve for x
    x = 82,517,199.01/12,999.05
  6. Step 6: Final answer
    x = 6,347.94

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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.