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Finding the Fourth Proportional to 10,379.50, 15,575.73 and 4,223.50

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Solution

The fourth proportional to 10,379.50, 15,575.73 and 4,223.50 is: 6,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379.50 : 15,575.73 = 4,223.50 : x
  2. Step 2: Convert to fraction form
    10,379.50/15,575.73 = 4,223.50/x
  3. Step 3: Cross multiply
    10,379.50x = 15,575.73 × 4,223.50
  4. Step 4: Simplify right side
    10,379.50x = 65,784,095.66
  5. Step 5: Solve for x
    x = 65,784,095.66/10,379.50
  6. Step 6: Final answer
    x = 6,337.89

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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.