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Finding the Fourth Proportional to 18,597.30, 27,900.12 and 8,736.72

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Solution

The fourth proportional to 18,597.30, 27,900.12 and 8,736.72 is: 13,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.30 : 27,900.12 = 8,736.72 : x
  2. Step 2: Convert to fraction form
    18,597.30/27,900.12 = 8,736.72/x
  3. Step 3: Cross multiply
    18,597.30x = 27,900.12 × 8,736.72
  4. Step 4: Simplify right side
    18,597.30x = 243,755,536.41
  5. Step 5: Solve for x
    x = 243,755,536.41/18,597.30
  6. Step 6: Final answer
    x = 13,107.04

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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.