Home / 21,536.50-29,717.78-11,973.99

Finding the Fourth Proportional to 21,536.50, 29,717.78 and 11,973.99

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Solution

The fourth proportional to 21,536.50, 29,717.78 and 11,973.99 is: 16,522.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,536.50 : 29,717.78 = 11,973.99 : x
  2. Step 2: Convert to fraction form
    21,536.50/29,717.78 = 11,973.99/x
  3. Step 3: Cross multiply
    21,536.50x = 29,717.78 × 11,973.99
  4. Step 4: Simplify right side
    21,536.50x = 355,840,235.05
  5. Step 5: Solve for x
    x = 355,840,235.05/21,536.50
  6. Step 6: Final answer
    x = 16,522.66

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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.