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Finding the Fourth Proportional to 29,279.80, 43,816.02 and 19,920.76

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Solution

The fourth proportional to 29,279.80, 43,816.02 and 19,920.76 is: 29,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.80 : 43,816.02 = 19,920.76 : x
  2. Step 2: Convert to fraction form
    29,279.80/43,816.02 = 19,920.76/x
  3. Step 3: Cross multiply
    29,279.80x = 43,816.02 × 19,920.76
  4. Step 4: Simplify right side
    29,279.80x = 872,848,418.58
  5. Step 5: Solve for x
    x = 872,848,418.58/29,279.80
  6. Step 6: Final answer
    x = 29,810.60

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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.