Home / 31,689.18-47,540.97-16,890.30

Finding the Fourth Proportional to 31,689.18, 47,540.97 and 16,890.30

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Solution

The fourth proportional to 31,689.18, 47,540.97 and 16,890.30 is: 25,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.18 : 47,540.97 = 16,890.30 : x
  2. Step 2: Convert to fraction form
    31,689.18/47,540.97 = 16,890.30/x
  3. Step 3: Cross multiply
    31,689.18x = 47,540.97 × 16,890.30
  4. Step 4: Simplify right side
    31,689.18x = 802,981,245.59
  5. Step 5: Solve for x
    x = 802,981,245.59/31,689.18
  6. Step 6: Final answer
    x = 25,339.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.