Home / 19,687.92-27,155.43-11,724

Finding the Fourth Proportional to 19,687.92, 27,155.43 and 11,724

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Solution

The fourth proportional to 19,687.92, 27,155.43 and 11,724 is: 16,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.92 : 27,155.43 = 11,724 : x
  2. Step 2: Convert to fraction form
    19,687.92/27,155.43 = 11,724/x
  3. Step 3: Cross multiply
    19,687.92x = 27,155.43 × 11,724
  4. Step 4: Simplify right side
    19,687.92x = 318,370,261.32
  5. Step 5: Solve for x
    x = 318,370,261.32/19,687.92
  6. Step 6: Final answer
    x = 16,170.84

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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.