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Finding the Fourth Proportional to 14,321.01, 21,472.88 and 6,422.09

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Solution

The fourth proportional to 14,321.01, 21,472.88 and 6,422.09 is: 9,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.01 : 21,472.88 = 6,422.09 : x
  2. Step 2: Convert to fraction form
    14,321.01/21,472.88 = 6,422.09/x
  3. Step 3: Cross multiply
    14,321.01x = 21,472.88 × 6,422.09
  4. Step 4: Simplify right side
    14,321.01x = 137,900,767.92
  5. Step 5: Solve for x
    x = 137,900,767.92/14,321.01
  6. Step 6: Final answer
    x = 9,629.26

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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.