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Finding the Fourth Proportional to 10,782.54, 16,174.26 and 5,247

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Solution

The fourth proportional to 10,782.54, 16,174.26 and 5,247 is: 7,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,782.54 : 16,174.26 = 5,247 : x
  2. Step 2: Convert to fraction form
    10,782.54/16,174.26 = 5,247/x
  3. Step 3: Cross multiply
    10,782.54x = 16,174.26 × 5,247
  4. Step 4: Simplify right side
    10,782.54x = 84,866,342.22
  5. Step 5: Solve for x
    x = 84,866,342.22/10,782.54
  6. Step 6: Final answer
    x = 7,870.72

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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.