Home / 31,628.43-43,647.28-18,199.42

Finding the Fourth Proportional to 31,628.43, 43,647.28 and 18,199.42

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Solution

The fourth proportional to 31,628.43, 43,647.28 and 18,199.42 is: 25,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.43 : 43,647.28 = 18,199.42 : x
  2. Step 2: Convert to fraction form
    31,628.43/43,647.28 = 18,199.42/x
  3. Step 3: Cross multiply
    31,628.43x = 43,647.28 × 18,199.42
  4. Step 4: Simplify right side
    31,628.43x = 794,355,180.58
  5. Step 5: Solve for x
    x = 794,355,180.58/31,628.43
  6. Step 6: Final answer
    x = 25,115.22

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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.