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Finding the Fourth Proportional to 11,938.96, 17,908.80 and 5,699.64

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Solution

The fourth proportional to 11,938.96, 17,908.80 and 5,699.64 is: 8,549.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.96 : 17,908.80 = 5,699.64 : x
  2. Step 2: Convert to fraction form
    11,938.96/17,908.80 = 5,699.64/x
  3. Step 3: Cross multiply
    11,938.96x = 17,908.80 × 5,699.64
  4. Step 4: Simplify right side
    11,938.96x = 102,073,712.83
  5. Step 5: Solve for x
    x = 102,073,712.83/11,938.96
  6. Step 6: Final answer
    x = 8,549.63

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1.5x scale

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.