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Finding the Fourth Proportional to 11,939.60, 17,903.24 and 6,320.30

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Solution

The fourth proportional to 11,939.60, 17,903.24 and 6,320.30 is: 9,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.60 : 17,903.24 = 6,320.30 : x
  2. Step 2: Convert to fraction form
    11,939.60/17,903.24 = 6,320.30/x
  3. Step 3: Cross multiply
    11,939.60x = 17,903.24 × 6,320.30
  4. Step 4: Simplify right side
    11,939.60x = 113,153,847.77
  5. Step 5: Solve for x
    x = 113,153,847.77/11,939.60
  6. Step 6: Final answer
    x = 9,477.19

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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.