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Finding the Fourth Proportional to 14,583.80, 21,891.90 and 11,311.40

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Solution

The fourth proportional to 14,583.80, 21,891.90 and 11,311.40 is: 16,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,583.80 : 21,891.90 = 11,311.40 : x
  2. Step 2: Convert to fraction form
    14,583.80/21,891.90 = 11,311.40/x
  3. Step 3: Cross multiply
    14,583.80x = 21,891.90 × 11,311.40
  4. Step 4: Simplify right side
    14,583.80x = 247,628,037.66
  5. Step 5: Solve for x
    x = 247,628,037.66/14,583.80
  6. Step 6: Final answer
    x = 16,979.66

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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.