Home / 12,820.35-19,195.77-6,651.39

Finding the Fourth Proportional to 12,820.35, 19,195.77 and 6,651.39

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Solution

The fourth proportional to 12,820.35, 19,195.77 and 6,651.39 is: 9,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.35 : 19,195.77 = 6,651.39 : x
  2. Step 2: Convert to fraction form
    12,820.35/19,195.77 = 6,651.39/x
  3. Step 3: Cross multiply
    12,820.35x = 19,195.77 × 6,651.39
  4. Step 4: Simplify right side
    12,820.35x = 127,678,552.62
  5. Step 5: Solve for x
    x = 127,678,552.62/12,820.35
  6. Step 6: Final answer
    x = 9,959.05

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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.