Home / 20,835.51-28,751.27-11,882.85

Finding the Fourth Proportional to 20,835.51, 28,751.27 and 11,882.85

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Solution

The fourth proportional to 20,835.51, 28,751.27 and 11,882.85 is: 16,397.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.51 : 28,751.27 = 11,882.85 : x
  2. Step 2: Convert to fraction form
    20,835.51/28,751.27 = 11,882.85/x
  3. Step 3: Cross multiply
    20,835.51x = 28,751.27 × 11,882.85
  4. Step 4: Simplify right side
    20,835.51x = 341,646,969.31
  5. Step 5: Solve for x
    x = 341,646,969.31/20,835.51
  6. Step 6: Final answer
    x = 16,397.34

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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.