Home / 31,659.10-43,646.77-20,308.86

Finding the Fourth Proportional to 31,659.10, 43,646.77 and 20,308.86

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Solution

The fourth proportional to 31,659.10, 43,646.77 and 20,308.86 is: 27,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,659.10 : 43,646.77 = 20,308.86 : x
  2. Step 2: Convert to fraction form
    31,659.10/43,646.77 = 20,308.86/x
  3. Step 3: Cross multiply
    31,659.10x = 43,646.77 × 20,308.86
  4. Step 4: Simplify right side
    31,659.10x = 886,416,003.30
  5. Step 5: Solve for x
    x = 886,416,003.30/31,659.10
  6. Step 6: Final answer
    x = 27,998.77

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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.