Home / 21,654.60-29,889-14,119.62

Finding the Fourth Proportional to 21,654.60, 29,889 and 14,119.62

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Solution

The fourth proportional to 21,654.60, 29,889 and 14,119.62 is: 19,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.60 : 29,889 = 14,119.62 : x
  2. Step 2: Convert to fraction form
    21,654.60/29,889 = 14,119.62/x
  3. Step 3: Cross multiply
    21,654.60x = 29,889 × 14,119.62
  4. Step 4: Simplify right side
    21,654.60x = 422,021,322.18
  5. Step 5: Solve for x
    x = 422,021,322.18/21,654.60
  6. Step 6: Final answer
    x = 19,488.76

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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.