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Finding the Fourth Proportional to 13,797, 20,699.58 and 7,957.80

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Solution

The fourth proportional to 13,797, 20,699.58 and 7,957.80 is: 11,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,797 : 20,699.58 = 7,957.80 : x
  2. Step 2: Convert to fraction form
    13,797/20,699.58 = 7,957.80/x
  3. Step 3: Cross multiply
    13,797x = 20,699.58 × 7,957.80
  4. Step 4: Simplify right side
    13,797x = 164,723,117.72
  5. Step 5: Solve for x
    x = 164,723,117.72/13,797
  6. Step 6: Final answer
    x = 11,939.05

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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.