Home / 21,260.43-31,869.99-11,904.93

Finding the Fourth Proportional to 21,260.43, 31,869.99 and 11,904.93

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Solution

The fourth proportional to 21,260.43, 31,869.99 and 11,904.93 is: 17,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.43 : 31,869.99 = 11,904.93 : x
  2. Step 2: Convert to fraction form
    21,260.43/31,869.99 = 11,904.93/x
  3. Step 3: Cross multiply
    21,260.43x = 31,869.99 × 11,904.93
  4. Step 4: Simplify right side
    21,260.43x = 379,410,000.05
  5. Step 5: Solve for x
    x = 379,410,000.05/21,260.43
  6. Step 6: Final answer
    x = 17,845.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.