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Finding the Fourth Proportional to 22,239.99, 33,369.75 and 8,385.75

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Solution

The fourth proportional to 22,239.99, 33,369.75 and 8,385.75 is: 12,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.99 : 33,369.75 = 8,385.75 : x
  2. Step 2: Convert to fraction form
    22,239.99/33,369.75 = 8,385.75/x
  3. Step 3: Cross multiply
    22,239.99x = 33,369.75 × 8,385.75
  4. Step 4: Simplify right side
    22,239.99x = 279,830,381.06
  5. Step 5: Solve for x
    x = 279,830,381.06/22,239.99
  6. Step 6: Final answer
    x = 12,582.31

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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.