Home / 12,739.15-19,116.50-8,052.70

Finding the Fourth Proportional to 12,739.15, 19,116.50 and 8,052.70

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Solution

The fourth proportional to 12,739.15, 19,116.50 and 8,052.70 is: 12,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.15 : 19,116.50 = 8,052.70 : x
  2. Step 2: Convert to fraction form
    12,739.15/19,116.50 = 8,052.70/x
  3. Step 3: Cross multiply
    12,739.15x = 19,116.50 × 8,052.70
  4. Step 4: Simplify right side
    12,739.15x = 153,939,439.55
  5. Step 5: Solve for x
    x = 153,939,439.55/12,739.15
  6. Step 6: Final answer
    x = 12,083.96

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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.