Home / 20,849.27-28,771.70-11,417.82

Finding the Fourth Proportional to 20,849.27, 28,771.70 and 11,417.82

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Solution

The fourth proportional to 20,849.27, 28,771.70 and 11,417.82 is: 15,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.27 : 28,771.70 = 11,417.82 : x
  2. Step 2: Convert to fraction form
    20,849.27/28,771.70 = 11,417.82/x
  3. Step 3: Cross multiply
    20,849.27x = 28,771.70 × 11,417.82
  4. Step 4: Simplify right side
    20,849.27x = 328,510,034.60
  5. Step 5: Solve for x
    x = 328,510,034.60/20,849.27
  6. Step 6: Final answer
    x = 15,756.43

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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.