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Finding the Fourth Proportional to 21,046.40, 29,043.80 and 11,614.80

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Solution

The fourth proportional to 21,046.40, 29,043.80 and 11,614.80 is: 16,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.40 : 29,043.80 = 11,614.80 : x
  2. Step 2: Convert to fraction form
    21,046.40/29,043.80 = 11,614.80/x
  3. Step 3: Cross multiply
    21,046.40x = 29,043.80 × 11,614.80
  4. Step 4: Simplify right side
    21,046.40x = 337,337,928.24
  5. Step 5: Solve for x
    x = 337,337,928.24/21,046.40
  6. Step 6: Final answer
    x = 16,028.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.