Home / 20,313.91-28,033.05-11,816.20

Finding the Fourth Proportional to 20,313.91, 28,033.05 and 11,816.20

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Solution

The fourth proportional to 20,313.91, 28,033.05 and 11,816.20 is: 16,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.91 : 28,033.05 = 11,816.20 : x
  2. Step 2: Convert to fraction form
    20,313.91/28,033.05 = 11,816.20/x
  3. Step 3: Cross multiply
    20,313.91x = 28,033.05 × 11,816.20
  4. Step 4: Simplify right side
    20,313.91x = 331,244,125.41
  5. Step 5: Solve for x
    x = 331,244,125.41/20,313.91
  6. Step 6: Final answer
    x = 16,306.27

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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.