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Finding the Fourth Proportional to 27,209.99, 40,809.52 and 8,487.01

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Solution

The fourth proportional to 27,209.99, 40,809.52 and 8,487.01 is: 12,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,209.99 : 40,809.52 = 8,487.01 : x
  2. Step 2: Convert to fraction form
    27,209.99/40,809.52 = 8,487.01/x
  3. Step 3: Cross multiply
    27,209.99x = 40,809.52 × 8,487.01
  4. Step 4: Simplify right side
    27,209.99x = 346,350,865.96
  5. Step 5: Solve for x
    x = 346,350,865.96/27,209.99
  6. Step 6: Final answer
    x = 12,728.81

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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.