Home / 12,936.14-17,845.27-8,688.14

Finding the Fourth Proportional to 12,936.14, 17,845.27 and 8,688.14

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Solution

The fourth proportional to 12,936.14, 17,845.27 and 8,688.14 is: 11,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.14 : 17,845.27 = 8,688.14 : x
  2. Step 2: Convert to fraction form
    12,936.14/17,845.27 = 8,688.14/x
  3. Step 3: Cross multiply
    12,936.14x = 17,845.27 × 8,688.14
  4. Step 4: Simplify right side
    12,936.14x = 155,042,093.15
  5. Step 5: Solve for x
    x = 155,042,093.15/12,936.14
  6. Step 6: Final answer
    x = 11,985.19

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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.