Home / 31,321.08-43,222.77-16,980.66

Finding the Fourth Proportional to 31,321.08, 43,222.77 and 16,980.66

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Solution

The fourth proportional to 31,321.08, 43,222.77 and 16,980.66 is: 23,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,321.08 : 43,222.77 = 16,980.66 : x
  2. Step 2: Convert to fraction form
    31,321.08/43,222.77 = 16,980.66/x
  3. Step 3: Cross multiply
    31,321.08x = 43,222.77 × 16,980.66
  4. Step 4: Simplify right side
    31,321.08x = 733,951,161.63
  5. Step 5: Solve for x
    x = 733,951,161.63/31,321.08
  6. Step 6: Final answer
    x = 23,433.14

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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.