Home / 20,828.24-28,756.84-12,333.12

Finding the Fourth Proportional to 20,828.24, 28,756.84 and 12,333.12

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Solution

The fourth proportional to 20,828.24, 28,756.84 and 12,333.12 is: 17,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.24 : 28,756.84 = 12,333.12 : x
  2. Step 2: Convert to fraction form
    20,828.24/28,756.84 = 12,333.12/x
  3. Step 3: Cross multiply
    20,828.24x = 28,756.84 × 12,333.12
  4. Step 4: Simplify right side
    20,828.24x = 354,661,558.54
  5. Step 5: Solve for x
    x = 354,661,558.54/20,828.24
  6. Step 6: Final answer
    x = 17,027.92

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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.