Home / 12,156.03-18,220.49-5,133.94

Finding the Fourth Proportional to 12,156.03, 18,220.49 and 5,133.94

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Solution

The fourth proportional to 12,156.03, 18,220.49 and 5,133.94 is: 7,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.03 : 18,220.49 = 5,133.94 : x
  2. Step 2: Convert to fraction form
    12,156.03/18,220.49 = 5,133.94/x
  3. Step 3: Cross multiply
    12,156.03x = 18,220.49 × 5,133.94
  4. Step 4: Simplify right side
    12,156.03x = 93,542,902.43
  5. Step 5: Solve for x
    x = 93,542,902.43/12,156.03
  6. Step 6: Final answer
    x = 7,695.19

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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.