Home / 31,835.78-47,763.21-12,850.65

Finding the Fourth Proportional to 31,835.78, 47,763.21 and 12,850.65

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Solution

The fourth proportional to 31,835.78, 47,763.21 and 12,850.65 is: 19,279.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.78 : 47,763.21 = 12,850.65 : x
  2. Step 2: Convert to fraction form
    31,835.78/47,763.21 = 12,850.65/x
  3. Step 3: Cross multiply
    31,835.78x = 47,763.21 × 12,850.65
  4. Step 4: Simplify right side
    31,835.78x = 613,788,294.59
  5. Step 5: Solve for x
    x = 613,788,294.59/31,835.78
  6. Step 6: Final answer
    x = 19,279.83

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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.