Home / 20,835.27-28,753.36-11,403.83

Finding the Fourth Proportional to 20,835.27, 28,753.36 and 11,403.83

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Solution

The fourth proportional to 20,835.27, 28,753.36 and 11,403.83 is: 15,737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.27 : 28,753.36 = 11,403.83 : x
  2. Step 2: Convert to fraction form
    20,835.27/28,753.36 = 11,403.83/x
  3. Step 3: Cross multiply
    20,835.27x = 28,753.36 × 11,403.83
  4. Step 4: Simplify right side
    20,835.27x = 327,898,429.37
  5. Step 5: Solve for x
    x = 327,898,429.37/20,835.27
  6. Step 6: Final answer
    x = 15,737.66

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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.