Home / 20,835.38-28,752.82-11,403.94

Finding the Fourth Proportional to 20,835.38, 28,752.82 and 11,403.94

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Solution

The fourth proportional to 20,835.38, 28,752.82 and 11,403.94 is: 15,737.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.38 : 28,752.82 = 11,403.94 : x
  2. Step 2: Convert to fraction form
    20,835.38/28,752.82 = 11,403.94/x
  3. Step 3: Cross multiply
    20,835.38x = 28,752.82 × 11,403.94
  4. Step 4: Simplify right side
    20,835.38x = 327,895,333.72
  5. Step 5: Solve for x
    x = 327,895,333.72/20,835.38
  6. Step 6: Final answer
    x = 15,737.43

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1.5x scale

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.