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Finding the Fourth Proportional to 11,579.09, 17,368.63 and 2,813.99

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Solution

The fourth proportional to 11,579.09, 17,368.63 and 2,813.99 is: 4,220.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.09 : 17,368.63 = 2,813.99 : x
  2. Step 2: Convert to fraction form
    11,579.09/17,368.63 = 2,813.99/x
  3. Step 3: Cross multiply
    11,579.09x = 17,368.63 × 2,813.99
  4. Step 4: Simplify right side
    11,579.09x = 48,875,057.26
  5. Step 5: Solve for x
    x = 48,875,057.26/11,579.09
  6. Step 6: Final answer
    x = 4,220.98

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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.