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Finding the Fourth Proportional to 18,315.54, 27,454.14 and 8,461.27

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Solution

The fourth proportional to 18,315.54, 27,454.14 and 8,461.27 is: 12,683.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.54 : 27,454.14 = 8,461.27 : x
  2. Step 2: Convert to fraction form
    18,315.54/27,454.14 = 8,461.27/x
  3. Step 3: Cross multiply
    18,315.54x = 27,454.14 × 8,461.27
  4. Step 4: Simplify right side
    18,315.54x = 232,296,891.16
  5. Step 5: Solve for x
    x = 232,296,891.16/18,315.54
  6. Step 6: Final answer
    x = 12,683.05

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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.