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Finding the Fourth Proportional to 14,489.80, 21,729.30 and 10,094.20

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Solution

The fourth proportional to 14,489.80, 21,729.30 and 10,094.20 is: 15,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,489.80 : 21,729.30 = 10,094.20 : x
  2. Step 2: Convert to fraction form
    14,489.80/21,729.30 = 10,094.20/x
  3. Step 3: Cross multiply
    14,489.80x = 21,729.30 × 10,094.20
  4. Step 4: Simplify right side
    14,489.80x = 219,339,900.06
  5. Step 5: Solve for x
    x = 219,339,900.06/14,489.80
  6. Step 6: Final answer
    x = 15,137.54

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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.