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Finding the Fourth Proportional to 18,397.80, 27,585.09 and 8,540.10

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Solution

The fourth proportional to 18,397.80, 27,585.09 and 8,540.10 is: 12,804.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.80 : 27,585.09 = 8,540.10 : x
  2. Step 2: Convert to fraction form
    18,397.80/27,585.09 = 8,540.10/x
  3. Step 3: Cross multiply
    18,397.80x = 27,585.09 × 8,540.10
  4. Step 4: Simplify right side
    18,397.80x = 235,579,427.11
  5. Step 5: Solve for x
    x = 235,579,427.11/18,397.80
  6. Step 6: Final answer
    x = 12,804.76

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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.