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Finding the Fourth Proportional to 14,640.81, 21,961.08 and 6,326.70

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Solution

The fourth proportional to 14,640.81, 21,961.08 and 6,326.70 is: 9,489.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.81 : 21,961.08 = 6,326.70 : x
  2. Step 2: Convert to fraction form
    14,640.81/21,961.08 = 6,326.70/x
  3. Step 3: Cross multiply
    14,640.81x = 21,961.08 × 6,326.70
  4. Step 4: Simplify right side
    14,640.81x = 138,941,164.84
  5. Step 5: Solve for x
    x = 138,941,164.84/14,640.81
  6. Step 6: Final answer
    x = 9,489.99

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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.