Home / 12,156.14-18,237.29-3,391.05

Finding the Fourth Proportional to 12,156.14, 18,237.29 and 3,391.05

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Solution

The fourth proportional to 12,156.14, 18,237.29 and 3,391.05 is: 5,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.14 : 18,237.29 = 3,391.05 : x
  2. Step 2: Convert to fraction form
    12,156.14/18,237.29 = 3,391.05/x
  3. Step 3: Cross multiply
    12,156.14x = 18,237.29 × 3,391.05
  4. Step 4: Simplify right side
    12,156.14x = 61,843,545.30
  5. Step 5: Solve for x
    x = 61,843,545.30/12,156.14
  6. Step 6: Final answer
    x = 5,087.43

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1.5x scale

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.