Home / 13,940.94-19,235.21-7,975.90

Finding the Fourth Proportional to 13,940.94, 19,235.21 and 7,975.90

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Solution

The fourth proportional to 13,940.94, 19,235.21 and 7,975.90 is: 11,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.94 : 19,235.21 = 7,975.90 : x
  2. Step 2: Convert to fraction form
    13,940.94/19,235.21 = 7,975.90/x
  3. Step 3: Cross multiply
    13,940.94x = 19,235.21 × 7,975.90
  4. Step 4: Simplify right side
    13,940.94x = 153,418,095.60
  5. Step 5: Solve for x
    x = 153,418,095.60/13,940.94
  6. Step 6: Final answer
    x = 11,004.86

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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.