Home / 31,849.66-43,911.21-20,498.86

Finding the Fourth Proportional to 31,849.66, 43,911.21 and 20,498.86

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Solution

The fourth proportional to 31,849.66, 43,911.21 and 20,498.86 is: 28,261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,849.66 : 43,911.21 = 20,498.86 : x
  2. Step 2: Convert to fraction form
    31,849.66/43,911.21 = 20,498.86/x
  3. Step 3: Cross multiply
    31,849.66x = 43,911.21 × 20,498.86
  4. Step 4: Simplify right side
    31,849.66x = 900,129,746.22
  5. Step 5: Solve for x
    x = 900,129,746.22/31,849.66
  6. Step 6: Final answer
    x = 28,261.83

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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.