Home / 20,017.40-27,636.89-12,850.38

Finding the Fourth Proportional to 20,017.40, 27,636.89 and 12,850.38

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Solution

The fourth proportional to 20,017.40, 27,636.89 and 12,850.38 is: 17,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.40 : 27,636.89 = 12,850.38 : x
  2. Step 2: Convert to fraction form
    20,017.40/27,636.89 = 12,850.38/x
  3. Step 3: Cross multiply
    20,017.40x = 27,636.89 × 12,850.38
  4. Step 4: Simplify right side
    20,017.40x = 355,144,474.27
  5. Step 5: Solve for x
    x = 355,144,474.27/20,017.40
  6. Step 6: Final answer
    x = 17,741.79

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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.