Home / 13,717.14-18,936.72-8,686.62

Finding the Fourth Proportional to 13,717.14, 18,936.72 and 8,686.62

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Solution

The fourth proportional to 13,717.14, 18,936.72 and 8,686.62 is: 11,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.14 : 18,936.72 = 8,686.62 : x
  2. Step 2: Convert to fraction form
    13,717.14/18,936.72 = 8,686.62/x
  3. Step 3: Cross multiply
    13,717.14x = 18,936.72 × 8,686.62
  4. Step 4: Simplify right side
    13,717.14x = 164,496,090.69
  5. Step 5: Solve for x
    x = 164,496,090.69/13,717.14
  6. Step 6: Final answer
    x = 11,992.01

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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.