Home / 19,876.85-27,431.42-13,150.82

Finding the Fourth Proportional to 19,876.85, 27,431.42 and 13,150.82

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Solution

The fourth proportional to 19,876.85, 27,431.42 and 13,150.82 is: 18,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.85 : 27,431.42 = 13,150.82 : x
  2. Step 2: Convert to fraction form
    19,876.85/27,431.42 = 13,150.82/x
  3. Step 3: Cross multiply
    19,876.85x = 27,431.42 × 13,150.82
  4. Step 4: Simplify right side
    19,876.85x = 360,745,463.85
  5. Step 5: Solve for x
    x = 360,745,463.85/19,876.85
  6. Step 6: Final answer
    x = 18,149.03

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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.