Home / 13,939.82-19,239.04-8,907.38

Finding the Fourth Proportional to 13,939.82, 19,239.04 and 8,907.38

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Solution

The fourth proportional to 13,939.82, 19,239.04 and 8,907.38 is: 12,293.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.82 : 19,239.04 = 8,907.38 : x
  2. Step 2: Convert to fraction form
    13,939.82/19,239.04 = 8,907.38/x
  3. Step 3: Cross multiply
    13,939.82x = 19,239.04 × 8,907.38
  4. Step 4: Simplify right side
    13,939.82x = 171,369,440.12
  5. Step 5: Solve for x
    x = 171,369,440.12/13,939.82
  6. Step 6: Final answer
    x = 12,293.52

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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.