Home / 31,759.16-47,638.73-8,385.80

Finding the Fourth Proportional to 31,759.16, 47,638.73 and 8,385.80

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Solution

The fourth proportional to 31,759.16, 47,638.73 and 8,385.80 is: 12,578.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,759.16 : 47,638.73 = 8,385.80 : x
  2. Step 2: Convert to fraction form
    31,759.16/47,638.73 = 8,385.80/x
  3. Step 3: Cross multiply
    31,759.16x = 47,638.73 × 8,385.80
  4. Step 4: Simplify right side
    31,759.16x = 399,488,644.80
  5. Step 5: Solve for x
    x = 399,488,644.80/31,759.16
  6. Step 6: Final answer
    x = 12,578.69

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Similar ratio
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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.