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Finding the Fourth Proportional to 22,115.60, 33,108.60 and 19,782.80

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Solution

The fourth proportional to 22,115.60, 33,108.60 and 19,782.80 is: 29,616.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.60 : 33,108.60 = 19,782.80 : x
  2. Step 2: Convert to fraction form
    22,115.60/33,108.60 = 19,782.80/x
  3. Step 3: Cross multiply
    22,115.60x = 33,108.60 × 19,782.80
  4. Step 4: Simplify right side
    22,115.60x = 654,980,812.08
  5. Step 5: Solve for x
    x = 654,980,812.08/22,115.60
  6. Step 6: Final answer
    x = 29,616.24

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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.