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Finding the Fourth Proportional to 11,293.80, 16,939.84 and 3,502.40

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Solution

The fourth proportional to 11,293.80, 16,939.84 and 3,502.40 is: 5,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,293.80 : 16,939.84 = 3,502.40 : x
  2. Step 2: Convert to fraction form
    11,293.80/16,939.84 = 3,502.40/x
  3. Step 3: Cross multiply
    11,293.80x = 16,939.84 × 3,502.40
  4. Step 4: Simplify right side
    11,293.80x = 59,330,095.62
  5. Step 5: Solve for x
    x = 59,330,095.62/11,293.80
  6. Step 6: Final answer
    x = 5,253.33

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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.