Home / 12,920.22-19,380.33-8,536.64

Finding the Fourth Proportional to 12,920.22, 19,380.33 and 8,536.64

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Solution

The fourth proportional to 12,920.22, 19,380.33 and 8,536.64 is: 12,804.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.22 : 19,380.33 = 8,536.64 : x
  2. Step 2: Convert to fraction form
    12,920.22/19,380.33 = 8,536.64/x
  3. Step 3: Cross multiply
    12,920.22x = 19,380.33 × 8,536.64
  4. Step 4: Simplify right side
    12,920.22x = 165,442,803.39
  5. Step 5: Solve for x
    x = 165,442,803.39/12,920.22
  6. Step 6: Final answer
    x = 12,804.95

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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.