Home / 18,940.12-28,409.40-7,252.64

Finding the Fourth Proportional to 18,940.12, 28,409.40 and 7,252.64

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Solution

The fourth proportional to 18,940.12, 28,409.40 and 7,252.64 is: 10,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.12 : 28,409.40 = 7,252.64 : x
  2. Step 2: Convert to fraction form
    18,940.12/28,409.40 = 7,252.64/x
  3. Step 3: Cross multiply
    18,940.12x = 28,409.40 × 7,252.64
  4. Step 4: Simplify right side
    18,940.12x = 206,043,150.82
  5. Step 5: Solve for x
    x = 206,043,150.82/18,940.12
  6. Step 6: Final answer
    x = 10,878.66

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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.