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Finding the Fourth Proportional to 18,395.83, 27,593.75 and 12,859.89

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Solution

The fourth proportional to 18,395.83, 27,593.75 and 12,859.89 is: 19,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.83 : 27,593.75 = 12,859.89 : x
  2. Step 2: Convert to fraction form
    18,395.83/27,593.75 = 12,859.89/x
  3. Step 3: Cross multiply
    18,395.83x = 27,593.75 × 12,859.89
  4. Step 4: Simplify right side
    18,395.83x = 354,852,589.69
  5. Step 5: Solve for x
    x = 354,852,589.69/18,395.83
  6. Step 6: Final answer
    x = 19,289.84

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1.5x scale

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.