Home / 20,664.24-28,516.78-11,711.89

Finding the Fourth Proportional to 20,664.24, 28,516.78 and 11,711.89

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Solution

The fourth proportional to 20,664.24, 28,516.78 and 11,711.89 is: 16,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.24 : 28,516.78 = 11,711.89 : x
  2. Step 2: Convert to fraction form
    20,664.24/28,516.78 = 11,711.89/x
  3. Step 3: Cross multiply
    20,664.24x = 28,516.78 × 11,711.89
  4. Step 4: Simplify right side
    20,664.24x = 333,985,247.93
  5. Step 5: Solve for x
    x = 333,985,247.93/20,664.24
  6. Step 6: Final answer
    x = 16,162.48

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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.