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Finding the Fourth Proportional to 18,579.65, 27,869.18 and 7,486.07

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Solution

The fourth proportional to 18,579.65, 27,869.18 and 7,486.07 is: 11,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.65 : 27,869.18 = 7,486.07 : x
  2. Step 2: Convert to fraction form
    18,579.65/27,869.18 = 7,486.07/x
  3. Step 3: Cross multiply
    18,579.65x = 27,869.18 × 7,486.07
  4. Step 4: Simplify right side
    18,579.65x = 208,630,664.57
  5. Step 5: Solve for x
    x = 208,630,664.57/18,579.65
  6. Step 6: Final answer
    x = 11,228.99

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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.