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Finding the Fourth Proportional to 18,352.58, 27,528.06 and 12,789.50

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Solution

The fourth proportional to 18,352.58, 27,528.06 and 12,789.50 is: 19,183.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,352.58 : 27,528.06 = 12,789.50 : x
  2. Step 2: Convert to fraction form
    18,352.58/27,528.06 = 12,789.50/x
  3. Step 3: Cross multiply
    18,352.58x = 27,528.06 × 12,789.50
  4. Step 4: Simplify right side
    18,352.58x = 352,070,123.37
  5. Step 5: Solve for x
    x = 352,070,123.37/18,352.58
  6. Step 6: Final answer
    x = 19,183.69

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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.