Home / 12,936.38-19,402.59-4,170.38

Finding the Fourth Proportional to 12,936.38, 19,402.59 and 4,170.38

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Solution

The fourth proportional to 12,936.38, 19,402.59 and 4,170.38 is: 6,254.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.38 : 19,402.59 = 4,170.38 : x
  2. Step 2: Convert to fraction form
    12,936.38/19,402.59 = 4,170.38/x
  3. Step 3: Cross multiply
    12,936.38x = 19,402.59 × 4,170.38
  4. Step 4: Simplify right side
    12,936.38x = 80,916,173.28
  5. Step 5: Solve for x
    x = 80,916,173.28/12,936.38
  6. Step 6: Final answer
    x = 6,254.93

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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.