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Finding the Fourth Proportional to 29,295.80, 43,943.70 and 21,519.80

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Solution

The fourth proportional to 29,295.80, 43,943.70 and 21,519.80 is: 32,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,295.80 : 43,943.70 = 21,519.80 : x
  2. Step 2: Convert to fraction form
    29,295.80/43,943.70 = 21,519.80/x
  3. Step 3: Cross multiply
    29,295.80x = 43,943.70 × 21,519.80
  4. Step 4: Simplify right side
    29,295.80x = 945,659,635.26
  5. Step 5: Solve for x
    x = 945,659,635.26/29,295.80
  6. Step 6: Final answer
    x = 32,279.70

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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.