Home / 19,881.64-27,436.72-11,383.89

Finding the Fourth Proportional to 19,881.64, 27,436.72 and 11,383.89

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Solution

The fourth proportional to 19,881.64, 27,436.72 and 11,383.89 is: 15,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.64 : 27,436.72 = 11,383.89 : x
  2. Step 2: Convert to fraction form
    19,881.64/27,436.72 = 11,383.89/x
  3. Step 3: Cross multiply
    19,881.64x = 27,436.72 × 11,383.89
  4. Step 4: Simplify right side
    19,881.64x = 312,336,602.44
  5. Step 5: Solve for x
    x = 312,336,602.44/19,881.64
  6. Step 6: Final answer
    x = 15,709.80

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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.