Home / 21,646.78-29,873.03-11,956.21

Finding the Fourth Proportional to 21,646.78, 29,873.03 and 11,956.21

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Solution

The fourth proportional to 21,646.78, 29,873.03 and 11,956.21 is: 16,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.78 : 29,873.03 = 11,956.21 : x
  2. Step 2: Convert to fraction form
    21,646.78/29,873.03 = 11,956.21/x
  3. Step 3: Cross multiply
    21,646.78x = 29,873.03 × 11,956.21
  4. Step 4: Simplify right side
    21,646.78x = 357,168,220.02
  5. Step 5: Solve for x
    x = 357,168,220.02/21,646.78
  6. Step 6: Final answer
    x = 16,499.83

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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.