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Finding the Fourth Proportional to 33,699.20, 50,590.40 and 21,219.20

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Solution

The fourth proportional to 33,699.20, 50,590.40 and 21,219.20 is: 31,854.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,699.20 : 50,590.40 = 21,219.20 : x
  2. Step 2: Convert to fraction form
    33,699.20/50,590.40 = 21,219.20/x
  3. Step 3: Cross multiply
    33,699.20x = 50,590.40 × 21,219.20
  4. Step 4: Simplify right side
    33,699.20x = 1,073,487,815.68
  5. Step 5: Solve for x
    x = 1,073,487,815.68/33,699.20
  6. Step 6: Final answer
    x = 31,854.99

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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.