Home / 12,126.76-18,193.50-5,105.08

Finding the Fourth Proportional to 12,126.76, 18,193.50 and 5,105.08

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Solution

The fourth proportional to 12,126.76, 18,193.50 and 5,105.08 is: 7,659.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.76 : 18,193.50 = 5,105.08 : x
  2. Step 2: Convert to fraction form
    12,126.76/18,193.50 = 5,105.08/x
  3. Step 3: Cross multiply
    12,126.76x = 18,193.50 × 5,105.08
  4. Step 4: Simplify right side
    12,126.76x = 92,879,272.98
  5. Step 5: Solve for x
    x = 92,879,272.98/12,126.76
  6. Step 6: Final answer
    x = 7,659.03

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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.