Home / 20,464.45-28,240.66-11,511.95

Finding the Fourth Proportional to 20,464.45, 28,240.66 and 11,511.95

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Solution

The fourth proportional to 20,464.45, 28,240.66 and 11,511.95 is: 15,886.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.45 : 28,240.66 = 11,511.95 : x
  2. Step 2: Convert to fraction form
    20,464.45/28,240.66 = 11,511.95/x
  3. Step 3: Cross multiply
    20,464.45x = 28,240.66 × 11,511.95
  4. Step 4: Simplify right side
    20,464.45x = 325,105,065.89
  5. Step 5: Solve for x
    x = 325,105,065.89/20,464.45
  6. Step 6: Final answer
    x = 15,886.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.