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Finding the Fourth Proportional to 14,324.67, 21,486.67 and 8,438.88

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Solution

The fourth proportional to 14,324.67, 21,486.67 and 8,438.88 is: 12,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,324.67 : 21,486.67 = 8,438.88 : x
  2. Step 2: Convert to fraction form
    14,324.67/21,486.67 = 8,438.88/x
  3. Step 3: Cross multiply
    14,324.67x = 21,486.67 × 8,438.88
  4. Step 4: Simplify right side
    14,324.67x = 181,323,489.21
  5. Step 5: Solve for x
    x = 181,323,489.21/14,324.67
  6. Step 6: Final answer
    x = 12,658.13

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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.