Home / 20,904.09-31,358.91-11,043.77

Finding the Fourth Proportional to 20,904.09, 31,358.91 and 11,043.77

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Solution

The fourth proportional to 20,904.09, 31,358.91 and 11,043.77 is: 16,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.09 : 31,358.91 = 11,043.77 : x
  2. Step 2: Convert to fraction form
    20,904.09/31,358.91 = 11,043.77/x
  3. Step 3: Cross multiply
    20,904.09x = 31,358.91 × 11,043.77
  4. Step 4: Simplify right side
    20,904.09x = 346,320,432.70
  5. Step 5: Solve for x
    x = 346,320,432.70/20,904.09
  6. Step 6: Final answer
    x = 16,567.11

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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.