Home / 20,812.24-28,720.92-11,737.72

Finding the Fourth Proportional to 20,812.24, 28,720.92 and 11,737.72

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Solution

The fourth proportional to 20,812.24, 28,720.92 and 11,737.72 is: 16,198.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.24 : 28,720.92 = 11,737.72 : x
  2. Step 2: Convert to fraction form
    20,812.24/28,720.92 = 11,737.72/x
  3. Step 3: Cross multiply
    20,812.24x = 28,720.92 × 11,737.72
  4. Step 4: Simplify right side
    20,812.24x = 337,118,117.10
  5. Step 5: Solve for x
    x = 337,118,117.10/20,812.24
  6. Step 6: Final answer
    x = 16,198.07

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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.