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Finding the Fourth Proportional to 18,425.56, 27,638.52 and 4,574.56

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Solution

The fourth proportional to 18,425.56, 27,638.52 and 4,574.56 is: 6,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.56 : 27,638.52 = 4,574.56 : x
  2. Step 2: Convert to fraction form
    18,425.56/27,638.52 = 4,574.56/x
  3. Step 3: Cross multiply
    18,425.56x = 27,638.52 × 4,574.56
  4. Step 4: Simplify right side
    18,425.56x = 126,434,068.05
  5. Step 5: Solve for x
    x = 126,434,068.05/18,425.56
  6. Step 6: Final answer
    x = 6,861.88

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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.