Home / 20,382.89-30,621.24-14,392.80

Finding the Fourth Proportional to 20,382.89, 30,621.24 and 14,392.80

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Solution

The fourth proportional to 20,382.89, 30,621.24 and 14,392.80 is: 21,622.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.89 : 30,621.24 = 14,392.80 : x
  2. Step 2: Convert to fraction form
    20,382.89/30,621.24 = 14,392.80/x
  3. Step 3: Cross multiply
    20,382.89x = 30,621.24 × 14,392.80
  4. Step 4: Simplify right side
    20,382.89x = 440,725,383.07
  5. Step 5: Solve for x
    x = 440,725,383.07/20,382.89
  6. Step 6: Final answer
    x = 21,622.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.