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Finding the Fourth Proportional to 18,484.70, 27,726.62 and 12,546.77

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Solution

The fourth proportional to 18,484.70, 27,726.62 and 12,546.77 is: 18,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,484.70 : 27,726.62 = 12,546.77 : x
  2. Step 2: Convert to fraction form
    18,484.70/27,726.62 = 12,546.77/x
  3. Step 3: Cross multiply
    18,484.70x = 27,726.62 × 12,546.77
  4. Step 4: Simplify right side
    18,484.70x = 347,879,322.65
  5. Step 5: Solve for x
    x = 347,879,322.65/18,484.70
  6. Step 6: Final answer
    x = 18,819.86

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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.