Home / 12,876.80-19,311.01-4,109.63

Finding the Fourth Proportional to 12,876.80, 19,311.01 and 4,109.63

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Solution

The fourth proportional to 12,876.80, 19,311.01 and 4,109.63 is: 6,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.80 : 19,311.01 = 4,109.63 : x
  2. Step 2: Convert to fraction form
    12,876.80/19,311.01 = 4,109.63/x
  3. Step 3: Cross multiply
    12,876.80x = 19,311.01 × 4,109.63
  4. Step 4: Simplify right side
    12,876.80x = 79,360,999.20
  5. Step 5: Solve for x
    x = 79,360,999.20/12,876.80
  6. Step 6: Final answer
    x = 6,163.10

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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.