Home / 31,664.10-43,701.84-18,243.12

Finding the Fourth Proportional to 31,664.10, 43,701.84 and 18,243.12

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Solution

The fourth proportional to 31,664.10, 43,701.84 and 18,243.12 is: 25,178.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,664.10 : 43,701.84 = 18,243.12 : x
  2. Step 2: Convert to fraction form
    31,664.10/43,701.84 = 18,243.12/x
  3. Step 3: Cross multiply
    31,664.10x = 43,701.84 × 18,243.12
  4. Step 4: Simplify right side
    31,664.10x = 797,257,911.34
  5. Step 5: Solve for x
    x = 797,257,911.34/31,664.10
  6. Step 6: Final answer
    x = 25,178.61

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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.