Home / 19,989.33-27,576.09-12,918.03

Finding the Fourth Proportional to 19,989.33, 27,576.09 and 12,918.03

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Solution

The fourth proportional to 19,989.33, 27,576.09 and 12,918.03 is: 17,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.33 : 27,576.09 = 12,918.03 : x
  2. Step 2: Convert to fraction form
    19,989.33/27,576.09 = 12,918.03/x
  3. Step 3: Cross multiply
    19,989.33x = 27,576.09 × 12,918.03
  4. Step 4: Simplify right side
    19,989.33x = 356,228,757.90
  5. Step 5: Solve for x
    x = 356,228,757.90/19,989.33
  6. Step 6: Final answer
    x = 17,820.95

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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.