Home / 12,755.45-19,145.10-6,519.80

Finding the Fourth Proportional to 12,755.45, 19,145.10 and 6,519.80

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Solution

The fourth proportional to 12,755.45, 19,145.10 and 6,519.80 is: 9,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.45 : 19,145.10 = 6,519.80 : x
  2. Step 2: Convert to fraction form
    12,755.45/19,145.10 = 6,519.80/x
  3. Step 3: Cross multiply
    12,755.45x = 19,145.10 × 6,519.80
  4. Step 4: Simplify right side
    12,755.45x = 124,822,222.98
  5. Step 5: Solve for x
    x = 124,822,222.98/12,755.45
  6. Step 6: Final answer
    x = 9,785.80

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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.