Home / 31,699.22-43,741.85-18,949.86

Finding the Fourth Proportional to 31,699.22, 43,741.85 and 18,949.86

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Solution

The fourth proportional to 31,699.22, 43,741.85 and 18,949.86 is: 26,148.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.22 : 43,741.85 = 18,949.86 : x
  2. Step 2: Convert to fraction form
    31,699.22/43,741.85 = 18,949.86/x
  3. Step 3: Cross multiply
    31,699.22x = 43,741.85 × 18,949.86
  4. Step 4: Simplify right side
    31,699.22x = 828,901,838.89
  5. Step 5: Solve for x
    x = 828,901,838.89/31,699.22
  6. Step 6: Final answer
    x = 26,148.97

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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.