Home / 31,628.12-43,645.51-18,199.86

Finding the Fourth Proportional to 31,628.12, 43,645.51 and 18,199.86

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Solution

The fourth proportional to 31,628.12, 43,645.51 and 18,199.86 is: 25,115.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.12 : 43,645.51 = 18,199.86 : x
  2. Step 2: Convert to fraction form
    31,628.12/43,645.51 = 18,199.86/x
  3. Step 3: Cross multiply
    31,628.12x = 43,645.51 × 18,199.86
  4. Step 4: Simplify right side
    31,628.12x = 794,342,048.66
  5. Step 5: Solve for x
    x = 794,342,048.66/31,628.12
  6. Step 6: Final answer
    x = 25,115.06

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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.