Home / 21,277.11-29,359.89-12,323.40

Finding the Fourth Proportional to 21,277.11, 29,359.89 and 12,323.40

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Solution

The fourth proportional to 21,277.11, 29,359.89 and 12,323.40 is: 17,004.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.11 : 29,359.89 = 12,323.40 : x
  2. Step 2: Convert to fraction form
    21,277.11/29,359.89 = 12,323.40/x
  3. Step 3: Cross multiply
    21,277.11x = 29,359.89 × 12,323.40
  4. Step 4: Simplify right side
    21,277.11x = 361,813,668.43
  5. Step 5: Solve for x
    x = 361,813,668.43/21,277.11
  6. Step 6: Final answer
    x = 17,004.83

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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.