Home / 20,234.36-27,913.49-13,521.64

Finding the Fourth Proportional to 20,234.36, 27,913.49 and 13,521.64

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Solution

The fourth proportional to 20,234.36, 27,913.49 and 13,521.64 is: 18,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.36 : 27,913.49 = 13,521.64 : x
  2. Step 2: Convert to fraction form
    20,234.36/27,913.49 = 13,521.64/x
  3. Step 3: Cross multiply
    20,234.36x = 27,913.49 × 13,521.64
  4. Step 4: Simplify right side
    20,234.36x = 377,436,162.92
  5. Step 5: Solve for x
    x = 377,436,162.92/20,234.36
  6. Step 6: Final answer
    x = 18,653.23

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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.