Home / 31,315.88-43,217.69-18,576.61

Finding the Fourth Proportional to 31,315.88, 43,217.69 and 18,576.61

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Solution

The fourth proportional to 31,315.88, 43,217.69 and 18,576.61 is: 25,636.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.88 : 43,217.69 = 18,576.61 : x
  2. Step 2: Convert to fraction form
    31,315.88/43,217.69 = 18,576.61/x
  3. Step 3: Cross multiply
    31,315.88x = 43,217.69 × 18,576.61
  4. Step 4: Simplify right side
    31,315.88x = 802,837,863.26
  5. Step 5: Solve for x
    x = 802,837,863.26/31,315.88
  6. Step 6: Final answer
    x = 25,636.77

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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.