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Finding the Fourth Proportional to 18,555.06, 27,826.41 and 8,555.72

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Solution

The fourth proportional to 18,555.06, 27,826.41 and 8,555.72 is: 12,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.06 : 27,826.41 = 8,555.72 : x
  2. Step 2: Convert to fraction form
    18,555.06/27,826.41 = 8,555.72/x
  3. Step 3: Cross multiply
    18,555.06x = 27,826.41 × 8,555.72
  4. Step 4: Simplify right side
    18,555.06x = 238,074,833.43
  5. Step 5: Solve for x
    x = 238,074,833.43/18,555.06
  6. Step 6: Final answer
    x = 12,830.72

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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.