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Finding the Fourth Proportional to 18,601.43, 27,899.70 and 8,210.75

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Solution

The fourth proportional to 18,601.43, 27,899.70 and 8,210.75 is: 12,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.43 : 27,899.70 = 8,210.75 : x
  2. Step 2: Convert to fraction form
    18,601.43/27,899.70 = 8,210.75/x
  3. Step 3: Cross multiply
    18,601.43x = 27,899.70 × 8,210.75
  4. Step 4: Simplify right side
    18,601.43x = 229,077,461.78
  5. Step 5: Solve for x
    x = 229,077,461.78/18,601.43
  6. Step 6: Final answer
    x = 12,315.05

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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.