Home / 20,824.80-31,198.32-13,904.16

Finding the Fourth Proportional to 20,824.80, 31,198.32 and 13,904.16

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Solution

The fourth proportional to 20,824.80, 31,198.32 and 13,904.16 is: 20,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.80 : 31,198.32 = 13,904.16 : x
  2. Step 2: Convert to fraction form
    20,824.80/31,198.32 = 13,904.16/x
  3. Step 3: Cross multiply
    20,824.80x = 31,198.32 × 13,904.16
  4. Step 4: Simplify right side
    20,824.80x = 433,786,433.01
  5. Step 5: Solve for x
    x = 433,786,433.01/20,824.80
  6. Step 6: Final answer
    x = 20,830.28

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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.