Home / 20,007.24-27,621.78-13,728.84

Finding the Fourth Proportional to 20,007.24, 27,621.78 and 13,728.84

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Solution

The fourth proportional to 20,007.24, 27,621.78 and 13,728.84 is: 18,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007.24 : 27,621.78 = 13,728.84 : x
  2. Step 2: Convert to fraction form
    20,007.24/27,621.78 = 13,728.84/x
  3. Step 3: Cross multiply
    20,007.24x = 27,621.78 × 13,728.84
  4. Step 4: Simplify right side
    20,007.24x = 379,214,998.14
  5. Step 5: Solve for x
    x = 379,214,998.14/20,007.24
  6. Step 6: Final answer
    x = 18,953.89

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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.