Home / 11,490.40-17,238.30-3,699.28

Finding the Fourth Proportional to 11,490.40, 17,238.30 and 3,699.28

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Solution

The fourth proportional to 11,490.40, 17,238.30 and 3,699.28 is: 5,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.40 : 17,238.30 = 3,699.28 : x
  2. Step 2: Convert to fraction form
    11,490.40/17,238.30 = 3,699.28/x
  3. Step 3: Cross multiply
    11,490.40x = 17,238.30 × 3,699.28
  4. Step 4: Simplify right side
    11,490.40x = 63,769,298.42
  5. Step 5: Solve for x
    x = 63,769,298.42/11,490.40
  6. Step 6: Final answer
    x = 5,549.79

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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.