Home / 19,876.58-27,430.44-11,380.04

Finding the Fourth Proportional to 19,876.58, 27,430.44 and 11,380.04

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Solution

The fourth proportional to 19,876.58, 27,430.44 and 11,380.04 is: 15,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.58 : 27,430.44 = 11,380.04 : x
  2. Step 2: Convert to fraction form
    19,876.58/27,430.44 = 11,380.04/x
  3. Step 3: Cross multiply
    19,876.58x = 27,430.44 × 11,380.04
  4. Step 4: Simplify right side
    19,876.58x = 312,159,504.42
  5. Step 5: Solve for x
    x = 312,159,504.42/19,876.58
  6. Step 6: Final answer
    x = 15,704.89

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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.