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Finding the Fourth Proportional to 18,597.74, 27,859.59 and 13,610.61

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Solution

The fourth proportional to 18,597.74, 27,859.59 and 13,610.61 is: 20,388.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.74 : 27,859.59 = 13,610.61 : x
  2. Step 2: Convert to fraction form
    18,597.74/27,859.59 = 13,610.61/x
  3. Step 3: Cross multiply
    18,597.74x = 27,859.59 × 13,610.61
  4. Step 4: Simplify right side
    18,597.74x = 379,186,014.25
  5. Step 5: Solve for x
    x = 379,186,014.25/18,597.74
  6. Step 6: Final answer
    x = 20,388.83

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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.