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Finding the Fourth Proportional to 18,561.84, 27,842.40 and 4,521.92

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Solution

The fourth proportional to 18,561.84, 27,842.40 and 4,521.92 is: 6,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.84 : 27,842.40 = 4,521.92 : x
  2. Step 2: Convert to fraction form
    18,561.84/27,842.40 = 4,521.92/x
  3. Step 3: Cross multiply
    18,561.84x = 27,842.40 × 4,521.92
  4. Step 4: Simplify right side
    18,561.84x = 125,901,105.41
  5. Step 5: Solve for x
    x = 125,901,105.41/18,561.84
  6. Step 6: Final answer
    x = 6,782.79

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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.