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Finding the Fourth Proportional to 14,438.56, 21,666.48 and 8,286.88

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Solution

The fourth proportional to 14,438.56, 21,666.48 and 8,286.88 is: 12,435.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,438.56 : 21,666.48 = 8,286.88 : x
  2. Step 2: Convert to fraction form
    14,438.56/21,666.48 = 8,286.88/x
  3. Step 3: Cross multiply
    14,438.56x = 21,666.48 × 8,286.88
  4. Step 4: Simplify right side
    14,438.56x = 179,547,519.78
  5. Step 5: Solve for x
    x = 179,547,519.78/14,438.56
  6. Step 6: Final answer
    x = 12,435.28

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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.