Home / 20,688.91-28,550.10-11,737.24

Finding the Fourth Proportional to 20,688.91, 28,550.10 and 11,737.24

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Solution

The fourth proportional to 20,688.91, 28,550.10 and 11,737.24 is: 16,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.91 : 28,550.10 = 11,737.24 : x
  2. Step 2: Convert to fraction form
    20,688.91/28,550.10 = 11,737.24/x
  3. Step 3: Cross multiply
    20,688.91x = 28,550.10 × 11,737.24
  4. Step 4: Simplify right side
    20,688.91x = 335,099,375.72
  5. Step 5: Solve for x
    x = 335,099,375.72/20,688.91
  6. Step 6: Final answer
    x = 16,197.05

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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.