Home / 31,239.78-43,110.75-16,899.61

Finding the Fourth Proportional to 31,239.78, 43,110.75 and 16,899.61

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Solution

The fourth proportional to 31,239.78, 43,110.75 and 16,899.61 is: 23,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,239.78 : 43,110.75 = 16,899.61 : x
  2. Step 2: Convert to fraction form
    31,239.78/43,110.75 = 16,899.61/x
  3. Step 3: Cross multiply
    31,239.78x = 43,110.75 × 16,899.61
  4. Step 4: Simplify right side
    31,239.78x = 728,554,861.81
  5. Step 5: Solve for x
    x = 728,554,861.81/31,239.78
  6. Step 6: Final answer
    x = 23,321.38

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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.